Finding the Fourth Proportional to 3,679.82, 5,078.28 and 2,108.22

Step by Step Solution

1. Step 1: Write the proportion equation
   3,679.82 : 5,078.28 = 2,108.22 : x
2. Step 2: Convert to fraction form
   3,679.82/5,078.28 = 2,108.22/x
3. Step 3: Cross multiply
   3,679.82x = 5,078.28 × 2,108.22
4. Step 4: Simplify right side
   3,679.82x = 10,706,112.42
5. Step 5: Solve for x
   x = 10,706,112.42/3,679.82
6. Step 6: Final answer
   x = 2,909.41