Finding the Fourth Proportional to 3,679.94, 5,078.50 and 2,168.34

Step by Step Solution

1. Step 1: Write the proportion equation
   3,679.94 : 5,078.50 = 2,168.34 : x
2. Step 2: Convert to fraction form
   3,679.94/5,078.50 = 2,168.34/x
3. Step 3: Cross multiply
   3,679.94x = 5,078.50 × 2,168.34
4. Step 4: Simplify right side
   3,679.94x = 11,011,914.69
5. Step 5: Solve for x
   x = 11,011,914.69/3,679.94
6. Step 6: Final answer
   x = 2,992.42