Finding the Fourth Proportional to 1,960.78, 2,938.76 and 1,443

Step by Step Solution

1. Step 1: Write the proportion equation
   1,960.78 : 2,938.76 = 1,443 : x
2. Step 2: Convert to fraction form
   1,960.78/2,938.76 = 1,443/x
3. Step 3: Cross multiply
   1,960.78x = 2,938.76 × 1,443
4. Step 4: Simplify right side
   1,960.78x = 4,240,630.68
5. Step 5: Solve for x
   x = 4,240,630.68/1,960.78
6. Step 6: Final answer
   x = 2,162.73