Finding the Fourth Proportional to 1,413.24, 2,118.51 and 1,017.60

Step by Step Solution

1. Step 1: Write the proportion equation
   1,413.24 : 2,118.51 = 1,017.60 : x
2. Step 2: Convert to fraction form
   1,413.24/2,118.51 = 1,017.60/x
3. Step 3: Cross multiply
   1,413.24x = 2,118.51 × 1,017.60
4. Step 4: Simplify right side
   1,413.24x = 2,155,795.78
5. Step 5: Solve for x
   x = 2,155,795.78/1,413.24
6. Step 6: Final answer
   x = 1,525.43