Finding the Fourth Proportional to 1,086.96, 1,500.74 and 694.51

Step by Step Solution

1. Step 1: Write the proportion equation
   1,086.96 : 1,500.74 = 694.51 : x
2. Step 2: Convert to fraction form
   1,086.96/1,500.74 = 694.51/x
3. Step 3: Cross multiply
   1,086.96x = 1,500.74 × 694.51
4. Step 4: Simplify right side
   1,086.96x = 1,042,278.94
5. Step 5: Solve for x
   x = 1,042,278.94/1,086.96
6. Step 6: Final answer
   x = 958.89