Finding the Fourth Proportional to 2,607,781.31, 3,911,610.89 and 688,826.43

Step by Step Solution

1. Step 1: Write the proportion equation
   2,607,781.31 : 3,911,610.89 = 688,826.43 : x
2. Step 2: Convert to fraction form
   2,607,781.31/3,911,610.89 = 688,826.43/x
3. Step 3: Cross multiply
   2,607,781.31x = 3,911,610.89 × 688,826.43
4. Step 4: Simplify right side
   2,607,781.31x = 2,694,420,961,463.69
5. Step 5: Solve for x
   x = 2,694,420,961,463.69/2,607,781.31
6. Step 6: Final answer
   x = 1,033,223.51