Finding the Fourth Proportional to 2,016.12, 3,024.36 and 920.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,016.12 : 3,024.36 = 920.28 : x
2. Step 2: Convert to fraction form
   2,016.12/3,024.36 = 920.28/x
3. Step 3: Cross multiply
   2,016.12x = 3,024.36 × 920.28
4. Step 4: Simplify right side
   2,016.12x = 2,783,258.02
5. Step 5: Solve for x
   x = 2,783,258.02/2,016.12
6. Step 6: Final answer
   x = 1,380.50