R. Kelly, Avril Lavigne and Alanis Morissette join contestants on their final night of performances. By Adam Graham Josh Krajcik, Chris Rene and Melanie Amaro on “The X Factor” Wednesday Photo: Ray Mickshaw / FOX At the outset of Wednesday’s (December 21) 90-minute “The X Factor” performance finale, which pitted three singers — Josh Krajcik, Chris Rene and Melanie Amaro — against one another for a $5 million recording contract, judge Simon Cowell predicted, “I think this is going to be the closest final we’ve ever had.” By the end of the penultimate show, Cowell made it clear who had his vote to win, and unsurprisingly, it was the singer he mentored in the race, Melanie Amaro. Following Amaro’s second song, a rendition of Beyonc
