Finding the Fourth Proportional to 1,146,049.10, 1,581,590.43 and 687,238.37

Step by Step Solution

1. Step 1: Write the proportion equation
   1,146,049.10 : 1,581,590.43 = 687,238.37 : x
2. Step 2: Convert to fraction form
   1,146,049.10/1,581,590.43 = 687,238.37/x
3. Step 3: Cross multiply
   1,146,049.10x = 1,581,590.43 × 687,238.37
4. Step 4: Simplify right side
   1,146,049.10x = 1,086,929,621,212.85
5. Step 5: Solve for x
   x = 1,086,929,621,212.85/1,146,049.10
6. Step 6: Final answer
   x = 948,414.54