Finding the Fourth Proportional to 1,255.62, 1,732.76 and 696.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,255.62 : 1,732.76 = 696.12 : x
2. Step 2: Convert to fraction form
   1,255.62/1,732.76 = 696.12/x
3. Step 3: Cross multiply
   1,255.62x = 1,732.76 × 696.12
4. Step 4: Simplify right side
   1,255.62x = 1,206,208.89
5. Step 5: Solve for x
   x = 1,206,208.89/1,255.62
6. Step 6: Final answer
   x = 960.65