Finding the Fourth Proportional to 1,116.89, 1,541.27 and 674.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,116.89 : 1,541.27 = 674.72 : x
2. Step 2: Convert to fraction form
   1,116.89/1,541.27 = 674.72/x
3. Step 3: Cross multiply
   1,116.89x = 1,541.27 × 674.72
4. Step 4: Simplify right side
   1,116.89x = 1,039,922.07
5. Step 5: Solve for x
   x = 1,039,922.07/1,116.89
6. Step 6: Final answer
   x = 931.09