Finding the Fourth Proportional to 3,564.90, 4,919.49 and 2,168.10

Step by Step Solution

1. Step 1: Write the proportion equation
   3,564.90 : 4,919.49 = 2,168.10 : x
2. Step 2: Convert to fraction form
   3,564.90/4,919.49 = 2,168.10/x
3. Step 3: Cross multiply
   3,564.90x = 4,919.49 × 2,168.10
4. Step 4: Simplify right side
   3,564.90x = 10,665,946.27
5. Step 5: Solve for x
   x = 10,665,946.27/3,564.90
6. Step 6: Final answer
   x = 2,991.93