Finding the Fourth Proportional to 3,815.48, 5,724.42 and 1,350.20

Step by Step Solution

1. Step 1: Write the proportion equation
   3,815.48 : 5,724.42 = 1,350.20 : x
2. Step 2: Convert to fraction form
   3,815.48/5,724.42 = 1,350.20/x
3. Step 3: Cross multiply
   3,815.48x = 5,724.42 × 1,350.20
4. Step 4: Simplify right side
   3,815.48x = 7,729,111.88
5. Step 5: Solve for x
   x = 7,729,111.88/3,815.48
6. Step 6: Final answer
   x = 2,025.72