Finding the Fourth Proportional to 2,251.15, 3,106.32 and 1,256.45

Step by Step Solution

1. Step 1: Write the proportion equation
   2,251.15 : 3,106.32 = 1,256.45 : x
2. Step 2: Convert to fraction form
   2,251.15/3,106.32 = 1,256.45/x
3. Step 3: Cross multiply
   2,251.15x = 3,106.32 × 1,256.45
4. Step 4: Simplify right side
   2,251.15x = 3,902,935.76
5. Step 5: Solve for x
   x = 3,902,935.76/2,251.15
6. Step 6: Final answer
   x = 1,733.76