Finding the Fourth Proportional to 1,087.72, 1,500.54 and 694.49

Step by Step Solution

1. Step 1: Write the proportion equation
   1,087.72 : 1,500.54 = 694.49 : x
2. Step 2: Convert to fraction form
   1,087.72/1,500.54 = 694.49/x
3. Step 3: Cross multiply
   1,087.72x = 1,500.54 × 694.49
4. Step 4: Simplify right side
   1,087.72x = 1,042,110.02
5. Step 5: Solve for x
   x = 1,042,110.02/1,087.72
6. Step 6: Final answer
   x = 958.07