Finding the Fourth Proportional to 2,613.81, 3,919.57 and 1,227.54

Step by Step Solution

1. Step 1: Write the proportion equation
   2,613.81 : 3,919.57 = 1,227.54 : x
2. Step 2: Convert to fraction form
   2,613.81/3,919.57 = 1,227.54/x
3. Step 3: Cross multiply
   2,613.81x = 3,919.57 × 1,227.54
4. Step 4: Simplify right side
   2,613.81x = 4,811,422.82
5. Step 5: Solve for x
   x = 4,811,422.82/2,613.81
6. Step 6: Final answer
   x = 1,840.77