Finding the Fourth Proportional to 2,413.21, 3,620.27 and 1,097.05

Step by Step Solution

1. Step 1: Write the proportion equation
   2,413.21 : 3,620.27 = 1,097.05 : x
2. Step 2: Convert to fraction form
   2,413.21/3,620.27 = 1,097.05/x
3. Step 3: Cross multiply
   2,413.21x = 3,620.27 × 1,097.05
4. Step 4: Simplify right side
   2,413.21x = 3,971,617.20
5. Step 5: Solve for x
   x = 3,971,617.20/2,413.21
6. Step 6: Final answer
   x = 1,645.78