Finding the Fourth Proportional to 712,615.98, 983,426.03 and 406,686.27

Step by Step Solution

1. Step 1: Write the proportion equation
   712,615.98 : 983,426.03 = 406,686.27 : x
2. Step 2: Convert to fraction form
   712,615.98/983,426.03 = 406,686.27/x
3. Step 3: Cross multiply
   712,615.98x = 983,426.03 × 406,686.27
4. Step 4: Simplify right side
   712,615.98x = 399,945,861,609.33
5. Step 5: Solve for x
   x = 399,945,861,609.33/712,615.98
6. Step 6: Final answer
   x = 561,236.17