Finding the Fourth Proportional to 3,315.50, 4,972.38 and 2,144.60

Step by Step Solution

1. Step 1: Write the proportion equation
   3,315.50 : 4,972.38 = 2,144.60 : x
2. Step 2: Convert to fraction form
   3,315.50/4,972.38 = 2,144.60/x
3. Step 3: Cross multiply
   3,315.50x = 4,972.38 × 2,144.60
4. Step 4: Simplify right side
   3,315.50x = 10,663,741.29
5. Step 5: Solve for x
   x = 10,663,741.29/3,315.50
6. Step 6: Final answer
   x = 3,216.33