hi <3
lets form an equation and associate values to each unknown
so, the first number can be 'n' and the second number can be 'n + 1' etc etc
now we have:
n + n + 1 + n + 2 + n + 3 = 354
4n + 6 = 354
subtract 6 from both sides:
4n = 348
divide both sides by 4:
n = 87
thus, the second number would be 88
hope this helps :)