Finding the Fourth Proportional to 2,940.77, 4,054.33 and 2,519.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,940.77 : 4,054.33 = 2,519.31 : x
2. Step 2: Convert to fraction form
   2,940.77/4,054.33 = 2,519.31/x
3. Step 3: Cross multiply
   2,940.77x = 4,054.33 × 2,519.31
4. Step 4: Simplify right side
   2,940.77x = 10,214,107.81
5. Step 5: Solve for x
   x = 10,214,107.81/2,940.77
6. Step 6: Final answer
   x = 3,473.28