Finding the Fourth Proportional to 706,513.08, 974,978.88 and 384,216.31

Step by Step Solution

1. Step 1: Write the proportion equation
   706,513.08 : 974,978.88 = 384,216.31 : x
2. Step 2: Convert to fraction form
   706,513.08/974,978.88 = 384,216.31/x
3. Step 3: Cross multiply
   706,513.08x = 974,978.88 × 384,216.31
4. Step 4: Simplify right side
   706,513.08x = 374,602,787,379.45
5. Step 5: Solve for x
   x = 374,602,787,379.45/706,513.08
6. Step 6: Final answer
   x = 530,213.52