Finding the Fourth Proportional to 1,118.15, 1,542.63 and 675.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,118.15 : 1,542.63 = 675.89 : x
2. Step 2: Convert to fraction form
   1,118.15/1,542.63 = 675.89/x
3. Step 3: Cross multiply
   1,118.15x = 1,542.63 × 675.89
4. Step 4: Simplify right side
   1,118.15x = 1,042,640.48
5. Step 5: Solve for x
   x = 1,042,640.48/1,118.15
6. Step 6: Final answer
   x = 932.47