Finding the Fourth Proportional to 1,469.72, 2,028.15 and 806.55

Step by Step Solution

1. Step 1: Write the proportion equation
   1,469.72 : 2,028.15 = 806.55 : x
2. Step 2: Convert to fraction form
   1,469.72/2,028.15 = 806.55/x
3. Step 3: Cross multiply
   1,469.72x = 2,028.15 × 806.55
4. Step 4: Simplify right side
   1,469.72x = 1,635,804.38
5. Step 5: Solve for x
   x = 1,635,804.38/1,469.72
6. Step 6: Final answer
   x = 1,113.01