Finding the Fourth Proportional to 1,116.72, 1,541.18 and 674.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,116.72 : 1,541.18 = 674.98 : x
2. Step 2: Convert to fraction form
   1,116.72/1,541.18 = 674.98/x
3. Step 3: Cross multiply
   1,116.72x = 1,541.18 × 674.98
4. Step 4: Simplify right side
   1,116.72x = 1,040,265.68
5. Step 5: Solve for x
   x = 1,040,265.68/1,116.72
6. Step 6: Final answer
   x = 931.54