Finding the Fourth Proportional to 1,255.58, 1,732.82 and 696.23

Step by Step Solution

1. Step 1: Write the proportion equation
   1,255.58 : 1,732.82 = 696.23 : x
2. Step 2: Convert to fraction form
   1,255.58/1,732.82 = 696.23/x
3. Step 3: Cross multiply
   1,255.58x = 1,732.82 × 696.23
4. Step 4: Simplify right side
   1,255.58x = 1,206,429.12
5. Step 5: Solve for x
   x = 1,206,429.12/1,255.58
6. Step 6: Final answer
   x = 960.86