Finding the Fourth Proportional to 2,215.28, 3,057.56 and 1,517.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,215.28 : 3,057.56 = 1,517.52 : x
2. Step 2: Convert to fraction form
   2,215.28/3,057.56 = 1,517.52/x
3. Step 3: Cross multiply
   2,215.28x = 3,057.56 × 1,517.52
4. Step 4: Simplify right side
   2,215.28x = 4,639,908.45
5. Step 5: Solve for x
   x = 4,639,908.45/2,215.28
6. Step 6: Final answer
   x = 2,094.50