Finding the Fourth Proportional to 1,469.91, 2,028.43 and 806.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,469.91 : 2,028.43 = 806.72 : x
2. Step 2: Convert to fraction form
   1,469.91/2,028.43 = 806.72/x
3. Step 3: Cross multiply
   1,469.91x = 2,028.43 × 806.72
4. Step 4: Simplify right side
   1,469.91x = 1,636,375.05
5. Step 5: Solve for x
   x = 1,636,375.05/1,469.91
6. Step 6: Final answer
   x = 1,113.25