Finding the Fourth Proportional to 716,054.37, 988,162.10 and 393,766.71

Step by Step Solution

1. Step 1: Write the proportion equation
   716,054.37 : 988,162.10 = 393,766.71 : x
2. Step 2: Convert to fraction form
   716,054.37/988,162.10 = 393,766.71/x
3. Step 3: Cross multiply
   716,054.37x = 988,162.10 × 393,766.71
4. Step 4: Simplify right side
   716,054.37x = 389,105,339,063.69
5. Step 5: Solve for x
   x = 389,105,339,063.69/716,054.37
6. Step 6: Final answer
   x = 543,401.95