Finding the Fourth Proportional to 1,116.76, 1,540.18 and 674.57

Step by Step Solution

1. Step 1: Write the proportion equation
   1,116.76 : 1,540.18 = 674.57 : x
2. Step 2: Convert to fraction form
   1,116.76/1,540.18 = 674.57/x
3. Step 3: Cross multiply
   1,116.76x = 1,540.18 × 674.57
4. Step 4: Simplify right side
   1,116.76x = 1,038,959.22
5. Step 5: Solve for x
   x = 1,038,959.22/1,116.76
6. Step 6: Final answer
   x = 930.33