Finding the Fourth Proportional to 2,426.53, 3,639.69 and 695.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,426.53 : 3,639.69 = 695.15 : x
2. Step 2: Convert to fraction form
   2,426.53/3,639.69 = 695.15/x
3. Step 3: Cross multiply
   2,426.53x = 3,639.69 × 695.15
4. Step 4: Simplify right side
   2,426.53x = 2,530,139.60
5. Step 5: Solve for x
   x = 2,530,139.60/2,426.53
6. Step 6: Final answer
   x = 1,042.70