Finding the Fourth Proportional to 714,111.86, 1,070,458.20 and 358,039.10

Step by Step Solution

1. Step 1: Write the proportion equation
   714,111.86 : 1,070,458.20 = 358,039.10 : x
2. Step 2: Convert to fraction form
   714,111.86/1,070,458.20 = 358,039.10/x
3. Step 3: Cross multiply
   714,111.86x = 1,070,458.20 × 358,039.10
4. Step 4: Simplify right side
   714,111.86x = 383,265,893,191.77
5. Step 5: Solve for x
   x = 383,265,893,191.77/714,111.86
6. Step 6: Final answer
   x = 536,702.88