Finding the Fourth Proportional to 2,561.09, 3,534.28 and 1,442.03

Step by Step Solution

1. Step 1: Write the proportion equation
   2,561.09 : 3,534.28 = 1,442.03 : x
2. Step 2: Convert to fraction form
   2,561.09/3,534.28 = 1,442.03/x
3. Step 3: Cross multiply
   2,561.09x = 3,534.28 × 1,442.03
4. Step 4: Simplify right side
   2,561.09x = 5,096,516.51
5. Step 5: Solve for x
   x = 5,096,516.51/2,561.09
6. Step 6: Final answer
   x = 1,989.98