Finding the Fourth Proportional to 1,413.38, 1,949.63 and 909.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,413.38 : 1,949.63 = 909.15 : x
2. Step 2: Convert to fraction form
   1,413.38/1,949.63 = 909.15/x
3. Step 3: Cross multiply
   1,413.38x = 1,949.63 × 909.15
4. Step 4: Simplify right side
   1,413.38x = 1,772,506.11
5. Step 5: Solve for x
   x = 1,772,506.11/1,413.38
6. Step 6: Final answer
   x = 1,254.09