Simon Cowell said the trio represented the most talented group of finalists of any singing competition he's done. But after Wednesday's performances, the head judge stood firmly behind his mentee, early frontrunner Amaro, saying the 19-year-old deserved to win following her duet with R. Kelly on "I Believe I Can Fly" and rendition of Beyoncé's "Listen."
Keep reading to find out the winner:
The singer, who was at one point sent home and then brought back to the competition, was speechless.
"Oh my god! Oh my god! Oh my god!" was all she could get out through tears before falling to her knees to pray.
"America, thank you for giving this girl an opportunity," Simon said on her behalf. "She is a star."
After attempting to sing, host Steve Jones tried to get an emotional Melanie to say a few words.
"Thank you so much!" she said. "I don't know what to say. Thank you. God is good."
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Runner-up Josh, who made burritos before auditioning for the show, said: "I feel amazing. Melanie deserves it. She has a wonderful voice. I've had such an incredible experience here ... I couldn't be happier."
Chris Rene, the recently rehabbed trash collector, took third place, which was announced earlier in the two-hour broadcast.
"I feel amazing that I got to do this, that I'm here and that God has blessed me with so many opportunities," Rene said. "I just got to say thank you."
Auditions for season 2 of The X Factor begin in January.