Finding the Fourth Proportional to 2,879.62, 3,980.01 and 2,538.34

Step by Step Solution

1. Step 1: Write the proportion equation
   2,879.62 : 3,980.01 = 2,538.34 : x
2. Step 2: Convert to fraction form
   2,879.62/3,980.01 = 2,538.34/x
3. Step 3: Cross multiply
   2,879.62x = 3,980.01 × 2,538.34
4. Step 4: Simplify right side
   2,879.62x = 10,102,618.58
5. Step 5: Solve for x
   x = 10,102,618.58/2,879.62
6. Step 6: Final answer
   x = 3,508.32