Finding the Fourth Proportional to 3,413.82, 5,120.68 and 1,105.32

Step by Step Solution

1. Step 1: Write the proportion equation
   3,413.82 : 5,120.68 = 1,105.32 : x
2. Step 2: Convert to fraction form
   3,413.82/5,120.68 = 1,105.32/x
3. Step 3: Cross multiply
   3,413.82x = 5,120.68 × 1,105.32
4. Step 4: Simplify right side
   3,413.82x = 5,659,990.02
5. Step 5: Solve for x
   x = 5,659,990.02/3,413.82
6. Step 6: Final answer
   x = 1,657.96