The format USCURR. uses the MULT= value of 1.61 and a prefix of $. Any number you format with the USCURR. format will be multiplied by 1.61 and then applied to the picture. The picture contains six digit selectors: five for the salary and one for the dollar sign prefix. LOW-HIGH ensures that all values are formatted.
      picture uscurr low-high='000,000' (mult=1.61 prefix='$');
   run;