Finding the Fourth Proportional to 1,287,781.25, 1,777,144.98 and 804,626.57

Step by Step Solution

1. Step 1: Write the proportion equation
   1,287,781.25 : 1,777,144.98 = 804,626.57 : x
2. Step 2: Convert to fraction form
   1,287,781.25/1,777,144.98 = 804,626.57/x
3. Step 3: Cross multiply
   1,287,781.25x = 1,777,144.98 × 804,626.57
4. Step 4: Simplify right side
   1,287,781.25x = 1,429,938,060,764.39
5. Step 5: Solve for x
   x = 1,429,938,060,764.39/1,287,781.25
6. Step 6: Final answer
   x = 1,110,388.95