Finding the Fourth Proportional to 2,565.56, 3,540.24 and 1,679.96

Step by Step Solution

1. Step 1: Write the proportion equation
   2,565.56 : 3,540.24 = 1,679.96 : x
2. Step 2: Convert to fraction form
   2,565.56/3,540.24 = 1,679.96/x
3. Step 3: Cross multiply
   2,565.56x = 3,540.24 × 1,679.96
4. Step 4: Simplify right side
   2,565.56x = 5,947,461.59
5. Step 5: Solve for x
   x = 5,947,461.59/2,565.56
6. Step 6: Final answer
   x = 2,318.19