Finding the Fourth Proportional to 2,169.89, 3,255.34 and 709.05

Step by Step Solution

1. Step 1: Write the proportion equation
   2,169.89 : 3,255.34 = 709.05 : x
2. Step 2: Convert to fraction form
   2,169.89/3,255.34 = 709.05/x
3. Step 3: Cross multiply
   2,169.89x = 3,255.34 × 709.05
4. Step 4: Simplify right side
   2,169.89x = 2,308,198.83
5. Step 5: Solve for x
   x = 2,308,198.83/2,169.89
6. Step 6: Final answer
   x = 1,063.74