Finding the Fourth Proportional to 2,579.82, 3,557.80 and 2,182.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,579.82 : 3,557.80 = 2,182.31 : x
2. Step 2: Convert to fraction form
   2,579.82/3,557.80 = 2,182.31/x
3. Step 3: Cross multiply
   2,579.82x = 3,557.80 × 2,182.31
4. Step 4: Simplify right side
   2,579.82x = 7,764,222.52
5. Step 5: Solve for x
   x = 7,764,222.52/2,579.82
6. Step 6: Final answer
   x = 3,009.60