Finding the Fourth Proportional to 1,086.87, 1,499.53 and 694.02

Step by Step Solution

1. Step 1: Write the proportion equation
   1,086.87 : 1,499.53 = 694.02 : x
2. Step 2: Convert to fraction form
   1,086.87/1,499.53 = 694.02/x
3. Step 3: Cross multiply
   1,086.87x = 1,499.53 × 694.02
4. Step 4: Simplify right side
   1,086.87x = 1,040,703.81
5. Step 5: Solve for x
   x = 1,040,703.81/1,086.87
6. Step 6: Final answer
   x = 957.52