Finding the Fourth Proportional to 1,255.50, 1,732.59 and 696.05

Step by Step Solution

1. Step 1: Write the proportion equation
   1,255.50 : 1,732.59 = 696.05 : x
2. Step 2: Convert to fraction form
   1,255.50/1,732.59 = 696.05/x
3. Step 3: Cross multiply
   1,255.50x = 1,732.59 × 696.05
4. Step 4: Simplify right side
   1,255.50x = 1,205,976.55
5. Step 5: Solve for x
   x = 1,205,976.55/1,255.50
6. Step 6: Final answer
   x = 960.55