Finding the Fourth Proportional to 933,784.69, 1,288,588.85 and 520,300.10

Step by Step Solution

1. Step 1: Write the proportion equation
   933,784.69 : 1,288,588.85 = 520,300.10 : x
2. Step 2: Convert to fraction form
   933,784.69/1,288,588.85 = 520,300.10/x
3. Step 3: Cross multiply
   933,784.69x = 1,288,588.85 × 520,300.10
4. Step 4: Simplify right side
   933,784.69x = 670,452,900,420.57
5. Step 5: Solve for x
   x = 670,452,900,420.57/933,784.69
6. Step 6: Final answer
   x = 717,995.17