Finding the Fourth Proportional to 2,561.18, 3,534.49 and 1,442.16

Step by Step Solution

1. Step 1: Write the proportion equation
   2,561.18 : 3,534.49 = 1,442.16 : x
2. Step 2: Convert to fraction form
   2,561.18/3,534.49 = 1,442.16/x
3. Step 3: Cross multiply
   2,561.18x = 3,534.49 × 1,442.16
4. Step 4: Simplify right side
   2,561.18x = 5,097,282.43
5. Step 5: Solve for x
   x = 5,097,282.43/2,561.18
6. Step 6: Final answer
   x = 1,990.21