Finding the Fourth Proportional to 1,146,050.78, 1,581,592.76 and 687,240.05

Step by Step Solution

1. Step 1: Write the proportion equation
   1,146,050.78 : 1,581,592.76 = 687,240.05 : x
2. Step 2: Convert to fraction form
   1,146,050.78/1,581,592.76 = 687,240.05/x
3. Step 3: Cross multiply
   1,146,050.78x = 1,581,592.76 × 687,240.05
4. Step 4: Simplify right side
   1,146,050.78x = 1,086,933,893,134.12
5. Step 5: Solve for x
   x = 1,086,933,893,134.12/1,146,050.78
6. Step 6: Final answer
   x = 948,416.87