345,348,340,358,354,350,380,384,385,305,304,308,403,405,408,430,435,438,450,453,458,480,483,485,503,504,508,530,534,538,540,543,548,580,584,583,803,804,805,834,830,835,845,840,843,850,853,854
100 - 4= 96%.
96% - 1344 руб.
100% - х руб.
1344 × 100
----------------- =1400.
96
Ответ: 1400 руб.