Finding the Fourth Proportional to 1,388,785.98, 1,915,753 and 807,943.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,388,785.98 : 1,915,753 = 807,943.86 : x
2. Step 2: Convert to fraction form
   1,388,785.98/1,915,753 = 807,943.86/x
3. Step 3: Cross multiply
   1,388,785.98x = 1,915,753 × 807,943.86
4. Step 4: Simplify right side
   1,388,785.98x = 1,547,820,873,626.58
5. Step 5: Solve for x
   x = 1,547,820,873,626.58/1,388,785.98
6. Step 6: Final answer
   x = 1,114,513.61