Finding the Fourth Proportional to 2,561.73, 3,535.35 and 1,442.81

Step by Step Solution

1. Step 1: Write the proportion equation
   2,561.73 : 3,535.35 = 1,442.81 : x
2. Step 2: Convert to fraction form
   2,561.73/3,535.35 = 1,442.81/x
3. Step 3: Cross multiply
   2,561.73x = 3,535.35 × 1,442.81
4. Step 4: Simplify right side
   2,561.73x = 5,100,841.76
5. Step 5: Solve for x
   x = 5,100,841.76/2,561.73
6. Step 6: Final answer
   x = 1,991.17