Finding the Fourth Proportional to 2,565.27, 3,839.69 and 1,330.98

Step by Step Solution

1. Step 1: Write the proportion equation
   2,565.27 : 3,839.69 = 1,330.98 : x
2. Step 2: Convert to fraction form
   2,565.27/3,839.69 = 1,330.98/x
3. Step 3: Cross multiply
   2,565.27x = 3,839.69 × 1,330.98
4. Step 4: Simplify right side
   2,565.27x = 5,110,550.60
5. Step 5: Solve for x
   x = 5,110,550.60/2,565.27
6. Step 6: Final answer
   x = 1,992.21