Finding the Fourth Proportional to 2,562.96, 3,840.72 and 1,391.97

Step by Step Solution

1. Step 1: Write the proportion equation
   2,562.96 : 3,840.72 = 1,391.97 : x
2. Step 2: Convert to fraction form
   2,562.96/3,840.72 = 1,391.97/x
3. Step 3: Cross multiply
   2,562.96x = 3,840.72 × 1,391.97
4. Step 4: Simplify right side
   2,562.96x = 5,346,167.02
5. Step 5: Solve for x
   x = 5,346,167.02/2,562.96
6. Step 6: Final answer
   x = 2,085.93