Finding the Fourth Proportional to 2,662.12, 3,991.24 and 1,256.04

Step by Step Solution

1. Step 1: Write the proportion equation
   2,662.12 : 3,991.24 = 1,256.04 : x
2. Step 2: Convert to fraction form
   2,662.12/3,991.24 = 1,256.04/x
3. Step 3: Cross multiply
   2,662.12x = 3,991.24 × 1,256.04
4. Step 4: Simplify right side
   2,662.12x = 5,013,157.09
5. Step 5: Solve for x
   x = 5,013,157.09/2,662.12
6. Step 6: Final answer
   x = 1,883.14