Finding the Fourth Proportional to 3,680.34, 5,078.88 and 2,108.46

Step by Step Solution

1. Step 1: Write the proportion equation
   3,680.34 : 5,078.88 = 2,108.46 : x
2. Step 2: Convert to fraction form
   3,680.34/5,078.88 = 2,108.46/x
3. Step 3: Cross multiply
   3,680.34x = 5,078.88 × 2,108.46
4. Step 4: Simplify right side
   3,680.34x = 10,708,615.32
5. Step 5: Solve for x
   x = 10,708,615.32/3,680.34
6. Step 6: Final answer
   x = 2,909.68