Finding the Fourth Proportional to 1,413.47, 2,119.49 and 488.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,413.47 : 2,119.49 = 488.72 : x
2. Step 2: Convert to fraction form
   1,413.47/2,119.49 = 488.72/x
3. Step 3: Cross multiply
   1,413.47x = 2,119.49 × 488.72
4. Step 4: Simplify right side
   1,413.47x = 1,035,834.71
5. Step 5: Solve for x
   x = 1,035,834.71/1,413.47
6. Step 6: Final answer
   x = 732.83