Finding the Fourth Proportional to 2,589.82, 3,574.53 and 1,581.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,589.82 : 3,574.53 = 1,581.78 : x
2. Step 2: Convert to fraction form
   2,589.82/3,574.53 = 1,581.78/x
3. Step 3: Cross multiply
   2,589.82x = 3,574.53 × 1,581.78
4. Step 4: Simplify right side
   2,589.82x = 5,654,113.36
5. Step 5: Solve for x
   x = 5,654,113.36/2,589.82
6. Step 6: Final answer
   x = 2,183.20