Finding the Fourth Proportional to 2,251.16, 3,106.56 and 1,256.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,251.16 : 3,106.56 = 1,256.42 : x
2. Step 2: Convert to fraction form
   2,251.16/3,106.56 = 1,256.42/x
3. Step 3: Cross multiply
   2,251.16x = 3,106.56 × 1,256.42
4. Step 4: Simplify right side
   2,251.16x = 3,903,144.12
5. Step 5: Solve for x
   x = 3,903,144.12/2,251.16
6. Step 6: Final answer
   x = 1,733.84