Finding the Fourth Proportional to 2,559.72, 3,842.58 and 1,329.48

Step by Step Solution

1. Step 1: Write the proportion equation
   2,559.72 : 3,842.58 = 1,329.48 : x
2. Step 2: Convert to fraction form
   2,559.72/3,842.58 = 1,329.48/x
3. Step 3: Cross multiply
   2,559.72x = 3,842.58 × 1,329.48
4. Step 4: Simplify right side
   2,559.72x = 5,108,633.26
5. Step 5: Solve for x
   x = 5,108,633.26/2,559.72
6. Step 6: Final answer
   x = 1,995.78