Finding the Fourth Proportional to 2,025.20, 3,038.52 and 871.76

Step by Step Solution

1. Step 1: Write the proportion equation
   2,025.20 : 3,038.52 = 871.76 : x
2. Step 2: Convert to fraction form
   2,025.20/3,038.52 = 871.76/x
3. Step 3: Cross multiply
   2,025.20x = 3,038.52 × 871.76
4. Step 4: Simplify right side
   2,025.20x = 2,648,860.20
5. Step 5: Solve for x
   x = 2,648,860.20/2,025.20
6. Step 6: Final answer
   x = 1,307.95