Finding the Fourth Proportional to 1,791.37, 2,686.98 and 817.46

Step by Step Solution

1. Step 1: Write the proportion equation
   1,791.37 : 2,686.98 = 817.46 : x
2. Step 2: Convert to fraction form
   1,791.37/2,686.98 = 817.46/x
3. Step 3: Cross multiply
   1,791.37x = 2,686.98 × 817.46
4. Step 4: Simplify right side
   1,791.37x = 2,196,498.38
5. Step 5: Solve for x
   x = 2,196,498.38/1,791.37
6. Step 6: Final answer
   x = 1,226.15