Finding the Fourth Proportional to 2,561.15, 3,534.34 and 1,442.08

Step by Step Solution

1. Step 1: Write the proportion equation
   2,561.15 : 3,534.34 = 1,442.08 : x
2. Step 2: Convert to fraction form
   2,561.15/3,534.34 = 1,442.08/x
3. Step 3: Cross multiply
   2,561.15x = 3,534.34 × 1,442.08
4. Step 4: Simplify right side
   2,561.15x = 5,096,801.03
5. Step 5: Solve for x
   x = 5,096,801.03/2,561.15
6. Step 6: Final answer
   x = 1,990.04