Finding the Fourth Proportional to 3,949.43, 5,919.98 and 1,316.23

Step by Step Solution

1. Step 1: Write the proportion equation
   3,949.43 : 5,919.98 = 1,316.23 : x
2. Step 2: Convert to fraction form
   3,949.43/5,919.98 = 1,316.23/x
3. Step 3: Cross multiply
   3,949.43x = 5,919.98 × 1,316.23
4. Step 4: Simplify right side
   3,949.43x = 7,792,055.28
5. Step 5: Solve for x
   x = 7,792,055.28/3,949.43
6. Step 6: Final answer
   x = 1,972.96