Finding the Fourth Proportional to 2,581.09, 3,561.87 and 1,402.18

Step by Step Solution

1. Step 1: Write the proportion equation
   2,581.09 : 3,561.87 = 1,402.18 : x
2. Step 2: Convert to fraction form
   2,581.09/3,561.87 = 1,402.18/x
3. Step 3: Cross multiply
   2,581.09x = 3,561.87 × 1,402.18
4. Step 4: Simplify right side
   2,581.09x = 4,994,382.88
5. Step 5: Solve for x
   x = 4,994,382.88/2,581.09
6. Step 6: Final answer
   x = 1,934.99