Finding the Fourth Proportional to 1,413.60, 1,951.52 and 1,065.76

Step by Step Solution

1. Step 1: Write the proportion equation
   1,413.60 : 1,951.52 = 1,065.76 : x
2. Step 2: Convert to fraction form
   1,413.60/1,951.52 = 1,065.76/x
3. Step 3: Cross multiply
   1,413.60x = 1,951.52 × 1,065.76
4. Step 4: Simplify right side
   1,413.60x = 2,079,851.96
5. Step 5: Solve for x
   x = 2,079,851.96/1,413.60
6. Step 6: Final answer
   x = 1,471.32