Finding the Fourth Proportional to 711,604.82, 982,025.72 and 389,320.30

Step by Step Solution

1. Step 1: Write the proportion equation
   711,604.82 : 982,025.72 = 389,320.30 : x
2. Step 2: Convert to fraction form
   711,604.82/982,025.72 = 389,320.30/x
3. Step 3: Cross multiply
   711,604.82x = 982,025.72 × 389,320.30
4. Step 4: Simplify right side
   711,604.82x = 382,322,546,436.35
5. Step 5: Solve for x
   x = 382,322,546,436.35/711,604.82
6. Step 6: Final answer
   x = 537,268.07