Finding the Fourth Proportional to 2,169.69, 3,255.69 and 1,074.06

Step by Step Solution

1. Step 1: Write the proportion equation
   2,169.69 : 3,255.69 = 1,074.06 : x
2. Step 2: Convert to fraction form
   2,169.69/3,255.69 = 1,074.06/x
3. Step 3: Cross multiply
   2,169.69x = 3,255.69 × 1,074.06
4. Step 4: Simplify right side
   2,169.69x = 3,496,810.43
5. Step 5: Solve for x
   x = 3,496,810.43/2,169.69
6. Step 6: Final answer
   x = 1,611.67