Story-wise it doesn't really matter, but if you play the first after the others it'll suffer as the gameplay made a healthy leap forward for 2. I'd either play 1 first or skip it, 2 and 3 it's not as much a factor. For me 2 is the best of the trilogy,
They're all ace, but it's really after the first that they hit a real groove so I'd play that first or just skip it. 2 and 3 is where it hits real Indiana Jones globe-trotting spectacular territory, can't wait to see what they do with it on PS4.