Finding the Fourth Proportional to 1,413.17, 1,949.99 and 783.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,413.17 : 1,949.99 = 783.69 : x
2. Step 2: Convert to fraction form
   1,413.17/1,949.99 = 783.69/x
3. Step 3: Cross multiply
   1,413.17x = 1,949.99 × 783.69
4. Step 4: Simplify right side
   1,413.17x = 1,528,185.70
5. Step 5: Solve for x
   x = 1,528,185.70/1,413.17
6. Step 6: Final answer
   x = 1,081.39