Finding the Fourth Proportional to 2,488.06, 3,729.48 and 1,025.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,488.06 : 3,729.48 = 1,025.20 : x
2. Step 2: Convert to fraction form
   2,488.06/3,729.48 = 1,025.20/x
3. Step 3: Cross multiply
   2,488.06x = 3,729.48 × 1,025.20
4. Step 4: Simplify right side
   2,488.06x = 3,823,462.90
5. Step 5: Solve for x
   x = 3,823,462.90/2,488.06
6. Step 6: Final answer
   x = 1,536.72