Finding the Fourth Proportional to 3,408.54, 5,113.35 and 1,099.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,408.54 : 5,113.35 = 1,099.50 : x
2. Step 2: Convert to fraction form
   3,408.54/5,113.35 = 1,099.50/x
3. Step 3: Cross multiply
   3,408.54x = 5,113.35 × 1,099.50
4. Step 4: Simplify right side
   3,408.54x = 5,622,128.33
5. Step 5: Solve for x
   x = 5,622,128.33/3,408.54
6. Step 6: Final answer
   x = 1,649.42