Finding the Fourth Proportional to 2,561.84, 3,535.31 and 1,442.79

Step by Step Solution

1. Step 1: Write the proportion equation
   2,561.84 : 3,535.31 = 1,442.79 : x
2. Step 2: Convert to fraction form
   2,561.84/3,535.31 = 1,442.79/x
3. Step 3: Cross multiply
   2,561.84x = 3,535.31 × 1,442.79
4. Step 4: Simplify right side
   2,561.84x = 5,100,713.52
5. Step 5: Solve for x
   x = 5,100,713.52/2,561.84
6. Step 6: Final answer
   x = 1,991.04