Finding the Fourth Proportional to 3,528.48, 5,284.56 and 2,067.20

Step by Step Solution

1. Step 1: Write the proportion equation
   3,528.48 : 5,284.56 = 2,067.20 : x
2. Step 2: Convert to fraction form
   3,528.48/5,284.56 = 2,067.20/x
3. Step 3: Cross multiply
   3,528.48x = 5,284.56 × 2,067.20
4. Step 4: Simplify right side
   3,528.48x = 10,924,242.43
5. Step 5: Solve for x
   x = 10,924,242.43/3,528.48
6. Step 6: Final answer
   x = 3,096.02