Finding the Fourth Proportional to 2,581.56, 3,559.56 and 1,872

Step by Step Solution

1. Step 1: Write the proportion equation
   2,581.56 : 3,559.56 = 1,872 : x
2. Step 2: Convert to fraction form
   2,581.56/3,559.56 = 1,872/x
3. Step 3: Cross multiply
   2,581.56x = 3,559.56 × 1,872
4. Step 4: Simplify right side
   2,581.56x = 6,663,496.32
5. Step 5: Solve for x
   x = 6,663,496.32/2,581.56
6. Step 6: Final answer
   x = 2,581.19