Finding the Fourth Proportional to 1,417.31, 2,127.27 and 724.46

Step by Step Solution

1. Step 1: Write the proportion equation
   1,417.31 : 2,127.27 = 724.46 : x
2. Step 2: Convert to fraction form
   1,417.31/2,127.27 = 724.46/x
3. Step 3: Cross multiply
   1,417.31x = 2,127.27 × 724.46
4. Step 4: Simplify right side
   1,417.31x = 1,541,111.39
5. Step 5: Solve for x
   x = 1,541,111.39/1,417.31
6. Step 6: Final answer
   x = 1,087.35