Finding the Fourth Proportional to 1,563.28, 2,158.17 and 1,067.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,563.28 : 2,158.17 = 1,067.15 : x
2. Step 2: Convert to fraction form
   1,563.28/2,158.17 = 1,067.15/x
3. Step 3: Cross multiply
   1,563.28x = 2,158.17 × 1,067.15
4. Step 4: Simplify right side
   1,563.28x = 2,303,091.12
5. Step 5: Solve for x
   x = 2,303,091.12/1,563.28
6. Step 6: Final answer
   x = 1,473.24