Finding the Fourth Proportional to 1,255.72, 1,732.88 and 696.19

Step by Step Solution

1. Step 1: Write the proportion equation
   1,255.72 : 1,732.88 = 696.19 : x
2. Step 2: Convert to fraction form
   1,255.72/1,732.88 = 696.19/x
3. Step 3: Cross multiply
   1,255.72x = 1,732.88 × 696.19
4. Step 4: Simplify right side
   1,255.72x = 1,206,413.73
5. Step 5: Solve for x
   x = 1,206,413.73/1,255.72
6. Step 6: Final answer
   x = 960.73