Finding the Fourth Proportional to 2,557.72, 3,833.52 and 1,325.68

Step by Step Solution

1. Step 1: Write the proportion equation
   2,557.72 : 3,833.52 = 1,325.68 : x
2. Step 2: Convert to fraction form
   2,557.72/3,833.52 = 1,325.68/x
3. Step 3: Cross multiply
   2,557.72x = 3,833.52 × 1,325.68
4. Step 4: Simplify right side
   2,557.72x = 5,082,020.79
5. Step 5: Solve for x
   x = 5,082,020.79/2,557.72
6. Step 6: Final answer
   x = 1,986.93