Finding the Fourth Proportional to 2,590.47, 3,882.05 and 1,028.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,590.47 : 3,882.05 = 1,028.88 : x
2. Step 2: Convert to fraction form
   2,590.47/3,882.05 = 1,028.88/x
3. Step 3: Cross multiply
   2,590.47x = 3,882.05 × 1,028.88
4. Step 4: Simplify right side
   2,590.47x = 3,994,158.46
5. Step 5: Solve for x
   x = 3,994,158.46/2,590.47
6. Step 6: Final answer
   x = 1,541.87