Finding the Fourth Proportional to 2,256.17, 3,113.42 and 1,261.43

Step by Step Solution

1. Step 1: Write the proportion equation
   2,256.17 : 3,113.42 = 1,261.43 : x
2. Step 2: Convert to fraction form
   2,256.17/3,113.42 = 1,261.43/x
3. Step 3: Cross multiply
   2,256.17x = 3,113.42 × 1,261.43
4. Step 4: Simplify right side
   2,256.17x = 3,927,339.52
5. Step 5: Solve for x
   x = 3,927,339.52/2,256.17
6. Step 6: Final answer
   x = 1,740.71