Finding the Fourth Proportional to 1,478.48, 2,040.27 and 806.29

Step by Step Solution

1. Step 1: Write the proportion equation
   1,478.48 : 2,040.27 = 806.29 : x
2. Step 2: Convert to fraction form
   1,478.48/2,040.27 = 806.29/x
3. Step 3: Cross multiply
   1,478.48x = 2,040.27 × 806.29
4. Step 4: Simplify right side
   1,478.48x = 1,645,049.30
5. Step 5: Solve for x
   x = 1,645,049.30/1,478.48
6. Step 6: Final answer
   x = 1,112.66