Finding the Fourth Proportional to 3,408.42, 5,111.53 and 1,099.38

Step by Step Solution

1. Step 1: Write the proportion equation
   3,408.42 : 5,111.53 = 1,099.38 : x
2. Step 2: Convert to fraction form
   3,408.42/5,111.53 = 1,099.38/x
3. Step 3: Cross multiply
   3,408.42x = 5,111.53 × 1,099.38
4. Step 4: Simplify right side
   3,408.42x = 5,619,513.85
5. Step 5: Solve for x
   x = 5,619,513.85/3,408.42
6. Step 6: Final answer
   x = 1,648.72