Finding the Fourth Proportional to 710,426.77, 980,403.05 and 388,156.83

Step by Step Solution

1. Step 1: Write the proportion equation
   710,426.77 : 980,403.05 = 388,156.83 : x
2. Step 2: Convert to fraction form
   710,426.77/980,403.05 = 388,156.83/x
3. Step 3: Cross multiply
   710,426.77x = 980,403.05 × 388,156.83
4. Step 4: Simplify right side
   710,426.77x = 380,550,140,010.33
5. Step 5: Solve for x
   x = 380,550,140,010.33/710,426.77
6. Step 6: Final answer
   x = 535,664.13