Finding the Fourth Proportional to 1,085.18, 1,498.65 and 935.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,085.18 : 1,498.65 = 935.50 : x
2. Step 2: Convert to fraction form
   1,085.18/1,498.65 = 935.50/x
3. Step 3: Cross multiply
   1,085.18x = 1,498.65 × 935.50
4. Step 4: Simplify right side
   1,085.18x = 1,401,974.90
5. Step 5: Solve for x
   x = 1,401,974.90/1,085.18
6. Step 6: Final answer
   x = 1,291.93