Finding the Fourth Proportional to 2,409.56, 3,615.12 and 1,256.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,409.56 : 3,615.12 = 1,256.12 : x
2. Step 2: Convert to fraction form
   2,409.56/3,615.12 = 1,256.12/x
3. Step 3: Cross multiply
   2,409.56x = 3,615.12 × 1,256.12
4. Step 4: Simplify right side
   2,409.56x = 4,541,024.53
5. Step 5: Solve for x
   x = 4,541,024.53/2,409.56
6. Step 6: Final answer
   x = 1,884.59