Finding the Fourth Proportional to 712,826.06, 983,700.72 and 386,139.83

Step by Step Solution

1. Step 1: Write the proportion equation
   712,826.06 : 983,700.72 = 386,139.83 : x
2. Step 2: Convert to fraction form
   712,826.06/983,700.72 = 386,139.83/x
3. Step 3: Cross multiply
   712,826.06x = 983,700.72 × 386,139.83
4. Step 4: Simplify right side
   712,826.06x = 379,846,023,873.17
5. Step 5: Solve for x
   x = 379,846,023,873.17/712,826.06
6. Step 6: Final answer
   x = 532,873.37