Finding the Fourth Proportional to 1,116.27, 1,540.47 and 674.07

Step by Step Solution

1. Step 1: Write the proportion equation
   1,116.27 : 1,540.47 = 674.07 : x
2. Step 2: Convert to fraction form
   1,116.27/1,540.47 = 674.07/x
3. Step 3: Cross multiply
   1,116.27x = 1,540.47 × 674.07
4. Step 4: Simplify right side
   1,116.27x = 1,038,384.61
5. Step 5: Solve for x
   x = 1,038,384.61/1,116.27
6. Step 6: Final answer
   x = 930.23