Finding the Fourth Proportional to 869,697.18, 1,200,238.89 and 502,189.83

Step by Step Solution

1. Step 1: Write the proportion equation
   869,697.18 : 1,200,238.89 = 502,189.83 : x
2. Step 2: Convert to fraction form
   869,697.18/1,200,238.89 = 502,189.83/x
3. Step 3: Cross multiply
   869,697.18x = 1,200,238.89 × 502,189.83
4. Step 4: Simplify right side
   869,697.18x = 602,747,764,128.49
5. Step 5: Solve for x
   x = 602,747,764,128.49/869,697.18
6. Step 6: Final answer
   x = 693,054.75