Finding the Fourth Proportional to 1,116.24, 1,540.38 and 673.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,116.24 : 1,540.38 = 673.98 : x
2. Step 2: Convert to fraction form
   1,116.24/1,540.38 = 673.98/x
3. Step 3: Cross multiply
   1,116.24x = 1,540.38 × 673.98
4. Step 4: Simplify right side
   1,116.24x = 1,038,185.31
5. Step 5: Solve for x
   x = 1,038,185.31/1,116.24
6. Step 6: Final answer
   x = 930.07