Finding the Fourth Proportional to 2,256.72, 3,384.84 and 1,086.36

Step by Step Solution

1. Step 1: Write the proportion equation
   2,256.72 : 3,384.84 = 1,086.36 : x
2. Step 2: Convert to fraction form
   2,256.72/3,384.84 = 1,086.36/x
3. Step 3: Cross multiply
   2,256.72x = 3,384.84 × 1,086.36
4. Step 4: Simplify right side
   2,256.72x = 3,677,154.78
5. Step 5: Solve for x
   x = 3,677,154.78/2,256.72
6. Step 6: Final answer
   x = 1,629.42