Finding the Fourth Proportional to 785,200.53, 1,083,300.80 and 513,427.50

Step by Step Solution

1. Step 1: Write the proportion equation
   785,200.53 : 1,083,300.80 = 513,427.50 : x
2. Step 2: Convert to fraction form
   785,200.53/1,083,300.80 = 513,427.50/x
3. Step 3: Cross multiply
   785,200.53x = 1,083,300.80 × 513,427.50
4. Step 4: Simplify right side
   785,200.53x = 556,196,418,924.86
5. Step 5: Solve for x
   x = 556,196,418,924.86/785,200.53
6. Step 6: Final answer
   x = 708,349.52