Finding the Fourth Proportional to 1,469.70, 2,028.20 and 806.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,469.70 : 2,028.20 = 806.56 : x
2. Step 2: Convert to fraction form
   1,469.70/2,028.20 = 806.56/x
3. Step 3: Cross multiply
   1,469.70x = 2,028.20 × 806.56
4. Step 4: Simplify right side
   1,469.70x = 1,635,855.89
5. Step 5: Solve for x
   x = 1,635,855.89/1,469.70
6. Step 6: Final answer
   x = 1,113.05