I have a sequence of up to 4 numbers in a row (Column A to D). Sometimes
there are #'s in all spots, sometimes in just the first one, any combination
of a random # or blank is possible. Only rule is that there must be a number
in the first position (column A).

I need a formula that will provide the position (numerically, i.e Column B
would be 2, column C would be 3., column 4 would be 4) of the last # in the
sequence. Don't need the value, just the position.

Note that it is possible that the first and last # in the series may be the
same (i.e. the first value of 4 potential is the only value).

Can anyone advise?