Finding the Fourth Proportional to 1,413.76, 1,951.96 and 1,081.61

Step by Step Solution

1. Step 1: Write the proportion equation
   1,413.76 : 1,951.96 = 1,081.61 : x
2. Step 2: Convert to fraction form
   1,413.76/1,951.96 = 1,081.61/x
3. Step 3: Cross multiply
   1,413.76x = 1,951.96 × 1,081.61
4. Step 4: Simplify right side
   1,413.76x = 2,111,259.46
5. Step 5: Solve for x
   x = 2,111,259.46/1,413.76
6. Step 6: Final answer
   x = 1,493.36