Finding the Fourth Proportional to 2,561.15, 3,842.92 and 1,327.89

Step by Step Solution

1. Step 1: Write the proportion equation
   2,561.15 : 3,842.92 = 1,327.89 : x
2. Step 2: Convert to fraction form
   2,561.15/3,842.92 = 1,327.89/x
3. Step 3: Cross multiply
   2,561.15x = 3,842.92 × 1,327.89
4. Step 4: Simplify right side
   2,561.15x = 5,102,955.82
5. Step 5: Solve for x
   x = 5,102,955.82/2,561.15
6. Step 6: Final answer
   x = 1,992.45