Finding the Fourth Proportional to 2,276.73, 3,413.73 and 890.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,276.73 : 3,413.73 = 890.72 : x
2. Step 2: Convert to fraction form
   2,276.73/3,413.73 = 890.72/x
3. Step 3: Cross multiply
   2,276.73x = 3,413.73 × 890.72
4. Step 4: Simplify right side
   2,276.73x = 3,040,677.59
5. Step 5: Solve for x
   x = 3,040,677.59/2,276.73
6. Step 6: Final answer
   x = 1,335.55