Nested If Function Formula

I need a formula that will populate the most current date out of N2,S2, and X2. But I can't have 1900. I need it to be blank or one of the dates listed in those three columns.

This is the formula I am using and it is only populating a blank:

=IF(AND(NOT(ISBLANK(N3)),ISBLANK(S3),ISBLANK(X3)),N3,IF(AND(NOT(ISBLANK(N3)),NOT(ISBLANK(S3)),ISBLANK(X3)),S3,IF(AND(NOT(ISBLANK(N3)),NOT(ISBLANK(S3)),NOT(ISBLANK(X3))),X3,"")))10:46avatarPopulate N2, if which cells have data?10:46


If I use this formula it only pulls N2 even if there is data in S2 or X2

=IF(NOT(ISBLANK(N4)),N4,IF(AND(NOT(ISBLANK(N4)),NOT(ISBLANK(S4))),S4,IF(AND(NOT(ISBLANK(N4)),NOT(ISBLANK(S4)),NOT(ISBLANK(X4))),X4,"")))

If I use this formula is still only returns N2 even is S2 or X2 has data
=IF(NOT(ISBLANK(N5)),N5,IF(NOT(ISBLANK(S5)),S5,IF(NOT(ISBLANK(X5)),X5,"")))