Finding the Fourth Proportional to 2,615.82, 3,920.39 and 1,226.09

Step by Step Solution

1. Step 1: Write the proportion equation
   2,615.82 : 3,920.39 = 1,226.09 : x
2. Step 2: Convert to fraction form
   2,615.82/3,920.39 = 1,226.09/x
3. Step 3: Cross multiply
   2,615.82x = 3,920.39 × 1,226.09
4. Step 4: Simplify right side
   2,615.82x = 4,806,762.86
5. Step 5: Solve for x
   x = 4,806,762.86/2,615.82
6. Step 6: Final answer
   x = 1,837.57