Finding the Fourth Proportional to 2,172.06, 3,255.75 and 1,074.06

Step by Step Solution

1. Step 1: Write the proportion equation
   2,172.06 : 3,255.75 = 1,074.06 : x
2. Step 2: Convert to fraction form
   2,172.06/3,255.75 = 1,074.06/x
3. Step 3: Cross multiply
   2,172.06x = 3,255.75 × 1,074.06
4. Step 4: Simplify right side
   2,172.06x = 3,496,870.85
5. Step 5: Solve for x
   x = 3,496,870.85/2,172.06
6. Step 6: Final answer
   x = 1,609.93