Finding the Fourth Proportional to 1,155,411.52, 1,594,438.04 and 639,151.96

Step by Step Solution

1. Step 1: Write the proportion equation
   1,155,411.52 : 1,594,438.04 = 639,151.96 : x
2. Step 2: Convert to fraction form
   1,155,411.52/1,594,438.04 = 639,151.96/x
3. Step 3: Cross multiply
   1,155,411.52x = 1,594,438.04 × 639,151.96
4. Step 4: Simplify right side
   1,155,411.52x = 1,019,088,198,364.56
5. Step 5: Solve for x
   x = 1,019,088,198,364.56/1,155,411.52
6. Step 6: Final answer
   x = 882,013.19