Finding the Fourth Proportional to 1,146,140.69, 1,581,609.78 and 687,025.49

Step by Step Solution

1. Step 1: Write the proportion equation
   1,146,140.69 : 1,581,609.78 = 687,025.49 : x
2. Step 2: Convert to fraction form
   1,146,140.69/1,581,609.78 = 687,025.49/x
3. Step 3: Cross multiply
   1,146,140.69x = 1,581,609.78 × 687,025.49
4. Step 4: Simplify right side
   1,146,140.69x = 1,086,606,226,185.24
5. Step 5: Solve for x
   x = 1,086,606,226,185.24/1,146,140.69
6. Step 6: Final answer
   x = 948,056.59