Finding the Fourth Proportional to 2,087.67, 2,880.96 and 1,143.54

Step by Step Solution

1. Step 1: Write the proportion equation
   2,087.67 : 2,880.96 = 1,143.54 : x
2. Step 2: Convert to fraction form
   2,087.67/2,880.96 = 1,143.54/x
3. Step 3: Cross multiply
   2,087.67x = 2,880.96 × 1,143.54
4. Step 4: Simplify right side
   2,087.67x = 3,294,493.00
5. Step 5: Solve for x
   x = 3,294,493.00/2,087.67
6. Step 6: Final answer
   x = 1,578.07