I'm looking for away to lookup a value within a given range and return the date where the value falls between.

So in this example. I'm looking to find the date where the values in row "EV" are between PV. Example, EV=$866 -->ES = May 2nd

1-May 2-May 3-May 4-May 5-May 6-May 7-May 8-May 9-May 10-May 11-May 12-May
PV $537 $959 $2,319 $3,257 $4,748 $5,300 $5,852 $6,404 $6,845 $7,008 $7,186 $7,364
EV $271 $866 $1,460 $1,784 $2,189 $2,270 $2,352 $2,433 $2,433 $2,433 #N/A #N/A
ES

Any help would be much appreciated!