Finding the Fourth Proportional to 2,576.18, 3,555.81 and 1,581.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,576.18 : 3,555.81 = 1,581.86 : x
2. Step 2: Convert to fraction form
   2,576.18/3,555.81 = 1,581.86/x
3. Step 3: Cross multiply
   2,576.18x = 3,555.81 × 1,581.86
4. Step 4: Simplify right side
   2,576.18x = 5,624,775.83
5. Step 5: Solve for x
   x = 5,624,775.83/2,576.18
6. Step 6: Final answer
   x = 2,183.38