Finding the Fourth Proportional to 2,144.34, 3,216.78 and 605.34

Step by Step Solution

1. Step 1: Write the proportion equation
   2,144.34 : 3,216.78 = 605.34 : x
2. Step 2: Convert to fraction form
   2,144.34/3,216.78 = 605.34/x
3. Step 3: Cross multiply
   2,144.34x = 3,216.78 × 605.34
4. Step 4: Simplify right side
   2,144.34x = 1,947,245.61
5. Step 5: Solve for x
   x = 1,947,245.61/2,144.34
6. Step 6: Final answer
   x = 908.09