Finding the Fourth Proportional to 2,087.87, 2,881.15 and 1,143.62

Step by Step Solution

1. Step 1: Write the proportion equation
   2,087.87 : 2,881.15 = 1,143.62 : x
2. Step 2: Convert to fraction form
   2,087.87/2,881.15 = 1,143.62/x
3. Step 3: Cross multiply
   2,087.87x = 2,881.15 × 1,143.62
4. Step 4: Simplify right side
   2,087.87x = 3,294,923.50
5. Step 5: Solve for x
   x = 3,294,923.50/2,087.87
6. Step 6: Final answer
   x = 1,578.12