Finding the Fourth Proportional to 3,185.05, 4,399.10 and 2,904.79

Step by Step Solution

1. Step 1: Write the proportion equation
   3,185.05 : 4,399.10 = 2,904.79 : x
2. Step 2: Convert to fraction form
   3,185.05/4,399.10 = 2,904.79/x
3. Step 3: Cross multiply
   3,185.05x = 4,399.10 × 2,904.79
4. Step 4: Simplify right side
   3,185.05x = 12,778,461.69
5. Step 5: Solve for x
   x = 12,778,461.69/3,185.05
6. Step 6: Final answer
   x = 4,012.01