Finding the Fourth Proportional to 3,846.69, 5,308.34 and 2,168.07

Step by Step Solution

1. Step 1: Write the proportion equation
   3,846.69 : 5,308.34 = 2,168.07 : x
2. Step 2: Convert to fraction form
   3,846.69/5,308.34 = 2,168.07/x
3. Step 3: Cross multiply
   3,846.69x = 5,308.34 × 2,168.07
4. Step 4: Simplify right side
   3,846.69x = 11,508,821.96
5. Step 5: Solve for x
   x = 11,508,821.96/3,846.69
6. Step 6: Final answer
   x = 2,991.88