Finding the Fourth Proportional to 3,920.21, 5,408.69 and 2,241.53

Step by Step Solution

1. Step 1: Write the proportion equation
   3,920.21 : 5,408.69 = 2,241.53 : x
2. Step 2: Convert to fraction form
   3,920.21/5,408.69 = 2,241.53/x
3. Step 3: Cross multiply
   3,920.21x = 5,408.69 × 2,241.53
4. Step 4: Simplify right side
   3,920.21x = 12,123,740.90
5. Step 5: Solve for x
   x = 12,123,740.90/3,920.21
6. Step 6: Final answer
   x = 3,092.63