Finding the Fourth Proportional to 2,251.45, 3,106.98 and 1,256.73

Step by Step Solution

1. Step 1: Write the proportion equation
   2,251.45 : 3,106.98 = 1,256.73 : x
2. Step 2: Convert to fraction form
   2,251.45/3,106.98 = 1,256.73/x
3. Step 3: Cross multiply
   2,251.45x = 3,106.98 × 1,256.73
4. Step 4: Simplify right side
   2,251.45x = 3,904,634.98
5. Step 5: Solve for x
   x = 3,904,634.98/2,251.45
6. Step 6: Final answer
   x = 1,734.28