Finding the Fourth Proportional to 2,613.05, 3,918 and 1,226.69

Step by Step Solution

1. Step 1: Write the proportion equation
   2,613.05 : 3,918 = 1,226.69 : x
2. Step 2: Convert to fraction form
   2,613.05/3,918 = 1,226.69/x
3. Step 3: Cross multiply
   2,613.05x = 3,918 × 1,226.69
4. Step 4: Simplify right side
   2,613.05x = 4,806,171.42
5. Step 5: Solve for x
   x = 4,806,171.42/2,613.05
6. Step 6: Final answer
   x = 1,839.30