Finding the Fourth Proportional to 2,275.83, 3,413.34 and 814.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,275.83 : 3,413.34 = 814.86 : x
2. Step 2: Convert to fraction form
   2,275.83/3,413.34 = 814.86/x
3. Step 3: Cross multiply
   2,275.83x = 3,413.34 × 814.86
4. Step 4: Simplify right side
   2,275.83x = 2,781,394.23
5. Step 5: Solve for x
   x = 2,781,394.23/2,275.83
6. Step 6: Final answer
   x = 1,222.14