Finding the Fourth Proportional to 1,086.18, 1,498.92 and 693.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,086.18 : 1,498.92 = 693.18 : x
2. Step 2: Convert to fraction form
   1,086.18/1,498.92 = 693.18/x
3. Step 3: Cross multiply
   1,086.18x = 1,498.92 × 693.18
4. Step 4: Simplify right side
   1,086.18x = 1,039,021.37
5. Step 5: Solve for x
   x = 1,039,021.37/1,086.18
6. Step 6: Final answer
   x = 956.58