Finding the Fourth Proportional to 2,144.50, 2,957.38 and 1,399.03

Step by Step Solution

1. Step 1: Write the proportion equation
   2,144.50 : 2,957.38 = 1,399.03 : x
2. Step 2: Convert to fraction form
   2,144.50/2,957.38 = 1,399.03/x
3. Step 3: Cross multiply
   2,144.50x = 2,957.38 × 1,399.03
4. Step 4: Simplify right side
   2,144.50x = 4,137,463.34
5. Step 5: Solve for x
   x = 4,137,463.34/2,144.50
6. Step 6: Final answer
   x = 1,929.34