Finding the Fourth Proportional to 1,116.48, 1,540.17 and 723.63

Step by Step Solution

1. Step 1: Write the proportion equation
   1,116.48 : 1,540.17 = 723.63 : x
2. Step 2: Convert to fraction form
   1,116.48/1,540.17 = 723.63/x
3. Step 3: Cross multiply
   1,116.48x = 1,540.17 × 723.63
4. Step 4: Simplify right side
   1,116.48x = 1,114,513.22
5. Step 5: Solve for x
   x = 1,114,513.22/1,116.48
6. Step 6: Final answer
   x = 998.24