Finding the Fourth Proportional to 3,603.57, 5,406.72 and 1,413.82

Step by Step Solution

1. Step 1: Write the proportion equation
   3,603.57 : 5,406.72 = 1,413.82 : x
2. Step 2: Convert to fraction form
   3,603.57/5,406.72 = 1,413.82/x
3. Step 3: Cross multiply
   3,603.57x = 5,406.72 × 1,413.82
4. Step 4: Simplify right side
   3,603.57x = 7,644,128.87
5. Step 5: Solve for x
   x = 7,644,128.87/3,603.57
6. Step 6: Final answer
   x = 2,121.27