Finding the Fourth Proportional to 1,413.79, 1,950.94 and 853.93

Step by Step Solution

1. Step 1: Write the proportion equation
   1,413.79 : 1,950.94 = 853.93 : x
2. Step 2: Convert to fraction form
   1,413.79/1,950.94 = 853.93/x
3. Step 3: Cross multiply
   1,413.79x = 1,950.94 × 853.93
4. Step 4: Simplify right side
   1,413.79x = 1,665,962.38
5. Step 5: Solve for x
   x = 1,665,962.38/1,413.79
6. Step 6: Final answer
   x = 1,178.37