Finding the Fourth Proportional to 2,993.40, 4,456.51 and 2,979

Step by Step Solution

1. Step 1: Write the proportion equation
   2,993.40 : 4,456.51 = 2,979 : x
2. Step 2: Convert to fraction form
   2,993.40/4,456.51 = 2,979/x
3. Step 3: Cross multiply
   2,993.40x = 4,456.51 × 2,979
4. Step 4: Simplify right side
   2,993.40x = 13,275,943.29
5. Step 5: Solve for x
   x = 13,275,943.29/2,993.40
6. Step 6: Final answer
   x = 4,435.07