Finding the Fourth Proportional to 3,144.50, 4,689.30 and 2,756.30

Step by Step Solution

1. Step 1: Write the proportion equation
   3,144.50 : 4,689.30 = 2,756.30 : x
2. Step 2: Convert to fraction form
   3,144.50/4,689.30 = 2,756.30/x
3. Step 3: Cross multiply
   3,144.50x = 4,689.30 × 2,756.30
4. Step 4: Simplify right side
   3,144.50x = 12,925,117.59
5. Step 5: Solve for x
   x = 12,925,117.59/3,144.50
6. Step 6: Final answer
   x = 4,110.39