Finding the Fourth Proportional to 3,460.56, 5,201.78 and 2,979.42

Step by Step Solution

1. Step 1: Write the proportion equation
   3,460.56 : 5,201.78 = 2,979.42 : x
2. Step 2: Convert to fraction form
   3,460.56/5,201.78 = 2,979.42/x
3. Step 3: Cross multiply
   3,460.56x = 5,201.78 × 2,979.42
4. Step 4: Simplify right side
   3,460.56x = 15,498,287.37
5. Step 5: Solve for x
   x = 15,498,287.37/3,460.56
6. Step 6: Final answer
   x = 4,478.55