Finding the Fourth Proportional to 2,589.05, 3,881.43 and 1,028.09

Step by Step Solution

1. Step 1: Write the proportion equation
   2,589.05 : 3,881.43 = 1,028.09 : x
2. Step 2: Convert to fraction form
   2,589.05/3,881.43 = 1,028.09/x
3. Step 3: Cross multiply
   2,589.05x = 3,881.43 × 1,028.09
4. Step 4: Simplify right side
   2,589.05x = 3,990,469.07
5. Step 5: Solve for x
   x = 3,990,469.07/2,589.05
6. Step 6: Final answer
   x = 1,541.29