Quote:Inferno Mode Bonus
After you reach level 200, each Inferno Tier will increase your gained experience by 0.3% and each 100 Inferno Tiers your experience will be boosted by 3%, as of Patch 0.60z.
Source: http://iourpg.wikia.com/wiki/Experience
So your formula is missing the 3% bonus from inferno tier 100+, which you don't have at your alt.
1,419,113 * 1.03 = 1,461,686 (looks like it rounds down, and you have your 1,461k)