Finding the Fourth Proportional to 2,020.96, 2,789.27 and 1,170.09

Step by Step Solution

1. Step 1: Write the proportion equation
   2,020.96 : 2,789.27 = 1,170.09 : x
2. Step 2: Convert to fraction form
   2,020.96/2,789.27 = 1,170.09/x
3. Step 3: Cross multiply
   2,020.96x = 2,789.27 × 1,170.09
4. Step 4: Simplify right side
   2,020.96x = 3,263,694.01
5. Step 5: Solve for x
   x = 3,263,694.01/2,020.96
6. Step 6: Final answer
   x = 1,614.92