Finding the Fourth Proportional to 875,807.68, 1,208,698.32 and 549,172.72

Step by Step Solution

1. Step 1: Write the proportion equation
   875,807.68 : 1,208,698.32 = 549,172.72 : x
2. Step 2: Convert to fraction form
   875,807.68/1,208,698.32 = 549,172.72/x
3. Step 3: Cross multiply
   875,807.68x = 1,208,698.32 × 549,172.72
4. Step 4: Simplify right side
   875,807.68x = 663,784,144,053.83
5. Step 5: Solve for x
   x = 663,784,144,053.83/875,807.68
6. Step 6: Final answer
   x = 757,910.85