Finding the Fourth Proportional to 712,162.50, 982,784.25 and 394,210.50

Step by Step Solution

1. Step 1: Write the proportion equation
   712,162.50 : 982,784.25 = 394,210.50 : x
2. Step 2: Convert to fraction form
   712,162.50/982,784.25 = 394,210.50/x
3. Step 3: Cross multiply
   712,162.50x = 982,784.25 × 394,210.50
4. Step 4: Simplify right side
   712,162.50x = 387,423,870,584.63
5. Step 5: Solve for x
   x = 387,423,870,584.63/712,162.50
6. Step 6: Final answer
   x = 544,010.49