Finding the Fourth Proportional to 3,679.89, 5,078.22 and 2,107.98

Step by Step Solution

1. Step 1: Write the proportion equation
   3,679.89 : 5,078.22 = 2,107.98 : x
2. Step 2: Convert to fraction form
   3,679.89/5,078.22 = 2,107.98/x
3. Step 3: Cross multiply
   3,679.89x = 5,078.22 × 2,107.98
4. Step 4: Simplify right side
   3,679.89x = 10,704,786.20
5. Step 5: Solve for x
   x = 10,704,786.20/3,679.89
6. Step 6: Final answer
   x = 2,909.00