Finding the Fourth Proportional to 2,561.43, 3,535.06 and 1,442.64

Step by Step Solution

1. Step 1: Write the proportion equation
   2,561.43 : 3,535.06 = 1,442.64 : x
2. Step 2: Convert to fraction form
   2,561.43/3,535.06 = 1,442.64/x
3. Step 3: Cross multiply
   2,561.43x = 3,535.06 × 1,442.64
4. Step 4: Simplify right side
   2,561.43x = 5,099,818.96
5. Step 5: Solve for x
   x = 5,099,818.96/2,561.43
6. Step 6: Final answer
   x = 1,991.00