Finding the Fourth Proportional to 2,087.09, 2,880.18 and 1,155.59

Step by Step Solution

1. Step 1: Write the proportion equation
   2,087.09 : 2,880.18 = 1,155.59 : x
2. Step 2: Convert to fraction form
   2,087.09/2,880.18 = 1,155.59/x
3. Step 3: Cross multiply
   2,087.09x = 2,880.18 × 1,155.59
4. Step 4: Simplify right side
   2,087.09x = 3,328,307.21
5. Step 5: Solve for x
   x = 3,328,307.21/2,087.09
6. Step 6: Final answer
   x = 1,594.71