Finding the Fourth Proportional to 2,588.55, 3,880.31 and 1,028.04

Step by Step Solution

1. Step 1: Write the proportion equation
   2,588.55 : 3,880.31 = 1,028.04 : x
2. Step 2: Convert to fraction form
   2,588.55/3,880.31 = 1,028.04/x
3. Step 3: Cross multiply
   2,588.55x = 3,880.31 × 1,028.04
4. Step 4: Simplify right side
   2,588.55x = 3,989,113.89
5. Step 5: Solve for x
   x = 3,989,113.89/2,588.55
6. Step 6: Final answer
   x = 1,541.06