Finding the Fourth Proportional to 710,426.52, 980,402.71 and 388,156.58

Step by Step Solution

1. Step 1: Write the proportion equation
   710,426.52 : 980,402.71 = 388,156.58 : x
2. Step 2: Convert to fraction form
   710,426.52/980,402.71 = 388,156.58/x
3. Step 3: Cross multiply
   710,426.52x = 980,402.71 × 388,156.58
4. Step 4: Simplify right side
   710,426.52x = 380,549,762,936.33
5. Step 5: Solve for x
   x = 380,549,762,936.33/710,426.52
6. Step 6: Final answer
   x = 535,663.79