Finding the Fourth Proportional to 2,581.53, 3,872.76 and 940.38

Step by Step Solution

1. Step 1: Write the proportion equation
   2,581.53 : 3,872.76 = 940.38 : x
2. Step 2: Convert to fraction form
   2,581.53/3,872.76 = 940.38/x
3. Step 3: Cross multiply
   2,581.53x = 3,872.76 × 940.38
4. Step 4: Simplify right side
   2,581.53x = 3,641,866.05
5. Step 5: Solve for x
   x = 3,641,866.05/2,581.53
6. Step 6: Final answer
   x = 1,410.74