Finding the Fourth Proportional to 1,413.72, 2,119.10 and 763.07

Step by Step Solution

1. Step 1: Write the proportion equation
   1,413.72 : 2,119.10 = 763.07 : x
2. Step 2: Convert to fraction form
   1,413.72/2,119.10 = 763.07/x
3. Step 3: Cross multiply
   1,413.72x = 2,119.10 × 763.07
4. Step 4: Simplify right side
   1,413.72x = 1,617,007.23
5. Step 5: Solve for x
   x = 1,617,007.23/1,413.72
6. Step 6: Final answer
   x = 1,143.80