Finding the Fourth Proportional to 781,978.32, 1,079,100.63 and 442,453.86

Step by Step Solution

1. Step 1: Write the proportion equation
   781,978.32 : 1,079,100.63 = 442,453.86 : x
2. Step 2: Convert to fraction form
   781,978.32/1,079,100.63 = 442,453.86/x
3. Step 3: Cross multiply
   781,978.32x = 1,079,100.63 × 442,453.86
4. Step 4: Simplify right side
   781,978.32x = 477,452,239,071.93
5. Step 5: Solve for x
   x = 477,452,239,071.93/781,978.32
6. Step 6: Final answer
   x = 610,569.66