Finding the Fourth Proportional to 2,256.51, 3,113.92 and 1,261.81

Step by Step Solution

1. Step 1: Write the proportion equation
   2,256.51 : 3,113.92 = 1,261.81 : x
2. Step 2: Convert to fraction form
   2,256.51/3,113.92 = 1,261.81/x
3. Step 3: Cross multiply
   2,256.51x = 3,113.92 × 1,261.81
4. Step 4: Simplify right side
   2,256.51x = 3,929,180.86
5. Step 5: Solve for x
   x = 3,929,180.86/2,256.51
6. Step 6: Final answer
   x = 1,741.26