Finding the Fourth Proportional to 2,618.87, 3,610.43 and 2,089.54

Step by Step Solution

1. Step 1: Write the proportion equation
   2,618.87 : 3,610.43 = 2,089.54 : x
2. Step 2: Convert to fraction form
   2,618.87/3,610.43 = 2,089.54/x
3. Step 3: Cross multiply
   2,618.87x = 3,610.43 × 2,089.54
4. Step 4: Simplify right side
   2,618.87x = 7,544,137.90
5. Step 5: Solve for x
   x = 7,544,137.90/2,618.87
6. Step 6: Final answer
   x = 2,880.68