Finding the Fourth Proportional to 1,086.56, 1,499.12 and 693.44

Step by Step Solution

1. Step 1: Write the proportion equation
   1,086.56 : 1,499.12 = 693.44 : x
2. Step 2: Convert to fraction form
   1,086.56/1,499.12 = 693.44/x
3. Step 3: Cross multiply
   1,086.56x = 1,499.12 × 693.44
4. Step 4: Simplify right side
   1,086.56x = 1,039,549.77
5. Step 5: Solve for x
   x = 1,039,549.77/1,086.56
6. Step 6: Final answer
   x = 956.73