Finding the Fourth Proportional to 1,413.40, 1,949.52 and 994.64

Step by Step Solution

1. Step 1: Write the proportion equation
   1,413.40 : 1,949.52 = 994.64 : x
2. Step 2: Convert to fraction form
   1,413.40/1,949.52 = 994.64/x
3. Step 3: Cross multiply
   1,413.40x = 1,949.52 × 994.64
4. Step 4: Simplify right side
   1,413.40x = 1,939,070.57
5. Step 5: Solve for x
   x = 1,939,070.57/1,413.40
6. Step 6: Final answer
   x = 1,371.92