Finding the Fourth Proportional to 2,256.45, 3,113.89 and 1,261.73

Step by Step Solution

1. Step 1: Write the proportion equation
   2,256.45 : 3,113.89 = 1,261.73 : x
2. Step 2: Convert to fraction form
   2,256.45/3,113.89 = 1,261.73/x
3. Step 3: Cross multiply
   2,256.45x = 3,113.89 × 1,261.73
4. Step 4: Simplify right side
   2,256.45x = 3,928,888.43
5. Step 5: Solve for x
   x = 3,928,888.43/2,256.45
6. Step 6: Final answer
   x = 1,741.18