Finding the Fourth Proportional to 1,116.96, 1,540.88 and 674.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,116.96 : 1,540.88 = 674.72 : x
2. Step 2: Convert to fraction form
   1,116.96/1,540.88 = 674.72/x
3. Step 3: Cross multiply
   1,116.96x = 1,540.88 × 674.72
4. Step 4: Simplify right side
   1,116.96x = 1,039,662.55
5. Step 5: Solve for x
   x = 1,039,662.55/1,116.96
6. Step 6: Final answer
   x = 930.80