Finding the Fourth Proportional to 2,456.40, 3,681.81 and 1,222.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,456.40 : 3,681.81 = 1,222.56 : x
2. Step 2: Convert to fraction form
   2,456.40/3,681.81 = 1,222.56/x
3. Step 3: Cross multiply
   2,456.40x = 3,681.81 × 1,222.56
4. Step 4: Simplify right side
   2,456.40x = 4,501,233.63
5. Step 5: Solve for x
   x = 4,501,233.63/2,456.40
6. Step 6: Final answer
   x = 1,832.45