Finding the Fourth Proportional to 1,413.32, 2,118.71 and 488.23

Step by Step Solution

1. Step 1: Write the proportion equation
   1,413.32 : 2,118.71 = 488.23 : x
2. Step 2: Convert to fraction form
   1,413.32/2,118.71 = 488.23/x
3. Step 3: Cross multiply
   1,413.32x = 2,118.71 × 488.23
4. Step 4: Simplify right side
   1,413.32x = 1,034,413.71
5. Step 5: Solve for x
   x = 1,034,413.71/1,413.32
6. Step 6: Final answer
   x = 731.91