Finding the Fourth Proportional to 1,038,339.86, 1,432,906.15 and 579,449.55

Step by Step Solution

1. Step 1: Write the proportion equation
   1,038,339.86 : 1,432,906.15 = 579,449.55 : x
2. Step 2: Convert to fraction form
   1,038,339.86/1,432,906.15 = 579,449.55/x
3. Step 3: Cross multiply
   1,038,339.86x = 1,432,906.15 × 579,449.55
4. Step 4: Simplify right side
   1,038,339.86x = 830,296,820,760.88
5. Step 5: Solve for x
   x = 830,296,820,760.88/1,038,339.86
6. Step 6: Final answer
   x = 799,638.78