Finding the Fourth Proportional to 1,086.48, 1,499.81 and 693.41

Step by Step Solution

1. Step 1: Write the proportion equation
   1,086.48 : 1,499.81 = 693.41 : x
2. Step 2: Convert to fraction form
   1,086.48/1,499.81 = 693.41/x
3. Step 3: Cross multiply
   1,086.48x = 1,499.81 × 693.41
4. Step 4: Simplify right side
   1,086.48x = 1,039,972.29
5. Step 5: Solve for x
   x = 1,039,972.29/1,086.48
6. Step 6: Final answer
   x = 957.19