Basic formula: PET = Distance x GS Home / (GS Home + GS Out)
PET = 2346 x 480 / (480 + 365)
PET = 1332,64 NM
Since you are interested in time from A to PET, you divide the distance A-PET with GS Out:
Time to PET = PET / GS Out = 1332,64 / 365 = 3,65 hours = 219 min