Finding the Fourth Proportional to 915,503.30, 1,370,490.15 and 804,911.30

Step by Step Solution

1. Step 1: Write the proportion equation
   915,503.30 : 1,370,490.15 = 804,911.30 : x
2. Step 2: Convert to fraction form
   915,503.30/1,370,490.15 = 804,911.30/x
3. Step 3: Cross multiply
   915,503.30x = 1,370,490.15 × 804,911.30
4. Step 4: Simplify right side
   915,503.30x = 1,103,123,008,273.70
5. Step 5: Solve for x
   x = 1,103,123,008,273.70/915,503.30
6. Step 6: Final answer
   x = 1,204,936.14