Finding the Fourth Proportional to 1,413.39, 1,950.45 and 783.96

Step by Step Solution

1. Step 1: Write the proportion equation
   1,413.39 : 1,950.45 = 783.96 : x
2. Step 2: Convert to fraction form
   1,413.39/1,950.45 = 783.96/x
3. Step 3: Cross multiply
   1,413.39x = 1,950.45 × 783.96
4. Step 4: Simplify right side
   1,413.39x = 1,529,074.78
5. Step 5: Solve for x
   x = 1,529,074.78/1,413.39
6. Step 6: Final answer
   x = 1,081.85