Finding the Fourth Proportional to 1,116.82, 1,541.21 and 674.71

Step by Step Solution

1. Step 1: Write the proportion equation
   1,116.82 : 1,541.21 = 674.71 : x
2. Step 2: Convert to fraction form
   1,116.82/1,541.21 = 674.71/x
3. Step 3: Cross multiply
   1,116.82x = 1,541.21 × 674.71
4. Step 4: Simplify right side
   1,116.82x = 1,039,869.80
5. Step 5: Solve for x
   x = 1,039,869.80/1,116.82
6. Step 6: Final answer
   x = 931.10