Finding the Fourth Proportional to 2,561.98, 3,535.25 and 1,442.89

Step by Step Solution

1. Step 1: Write the proportion equation
   2,561.98 : 3,535.25 = 1,442.89 : x
2. Step 2: Convert to fraction form
   2,561.98/3,535.25 = 1,442.89/x
3. Step 3: Cross multiply
   2,561.98x = 3,535.25 × 1,442.89
4. Step 4: Simplify right side
   2,561.98x = 5,100,976.87
5. Step 5: Solve for x
   x = 5,100,976.87/2,561.98
6. Step 6: Final answer
   x = 1,991.03