Finding the Fourth Proportional to 1,116.33, 1,540.54 and 724.04

Step by Step Solution

1. Step 1: Write the proportion equation
   1,116.33 : 1,540.54 = 724.04 : x
2. Step 2: Convert to fraction form
   1,116.33/1,540.54 = 724.04/x
3. Step 3: Cross multiply
   1,116.33x = 1,540.54 × 724.04
4. Step 4: Simplify right side
   1,116.33x = 1,115,412.58
5. Step 5: Solve for x
   x = 1,115,412.58/1,116.33
6. Step 6: Final answer
   x = 999.18