Finding the Fourth Proportional to 3,760.72, 5,640.72 and 1,295.20

Step by Step Solution

1. Step 1: Write the proportion equation
   3,760.72 : 5,640.72 = 1,295.20 : x
2. Step 2: Convert to fraction form
   3,760.72/5,640.72 = 1,295.20/x
3. Step 3: Cross multiply
   3,760.72x = 5,640.72 × 1,295.20
4. Step 4: Simplify right side
   3,760.72x = 7,305,860.54
5. Step 5: Solve for x
   x = 7,305,860.54/3,760.72
6. Step 6: Final answer
   x = 1,942.68