Finding the Fourth Proportional to 1,116.80, 1,541.20 and 674.62

Step by Step Solution

1. Step 1: Write the proportion equation
   1,116.80 : 1,541.20 = 674.62 : x
2. Step 2: Convert to fraction form
   1,116.80/1,541.20 = 674.62/x
3. Step 3: Cross multiply
   1,116.80x = 1,541.20 × 674.62
4. Step 4: Simplify right side
   1,116.80x = 1,039,724.34
5. Step 5: Solve for x
   x = 1,039,724.34/1,116.80
6. Step 6: Final answer
   x = 930.99