Finding the Fourth Proportional to 2,581.31, 3,563.13 and 1,533.38

Step by Step Solution

1. Step 1: Write the proportion equation
   2,581.31 : 3,563.13 = 1,533.38 : x
2. Step 2: Convert to fraction form
   2,581.31/3,563.13 = 1,533.38/x
3. Step 3: Cross multiply
   2,581.31x = 3,563.13 × 1,533.38
4. Step 4: Simplify right side
   2,581.31x = 5,463,632.28
5. Step 5: Solve for x
   x = 5,463,632.28/2,581.31
6. Step 6: Final answer
   x = 2,116.61