Finding the Fourth Proportional to 1,413.27, 2,118.69 and 683.36

Step by Step Solution

1. Step 1: Write the proportion equation
   1,413.27 : 2,118.69 = 683.36 : x
2. Step 2: Convert to fraction form
   1,413.27/2,118.69 = 683.36/x
3. Step 3: Cross multiply
   1,413.27x = 2,118.69 × 683.36
4. Step 4: Simplify right side
   1,413.27x = 1,447,817.40
5. Step 5: Solve for x
   x = 1,447,817.40/1,413.27
6. Step 6: Final answer
   x = 1,024.45