Finding the Fourth Proportional to 2,255.03, 3,111.81 and 1,260.11

Step by Step Solution

1. Step 1: Write the proportion equation
   2,255.03 : 3,111.81 = 1,260.11 : x
2. Step 2: Convert to fraction form
   2,255.03/3,111.81 = 1,260.11/x
3. Step 3: Cross multiply
   2,255.03x = 3,111.81 × 1,260.11
4. Step 4: Simplify right side
   2,255.03x = 3,921,207.34
5. Step 5: Solve for x
   x = 3,921,207.34/2,255.03
6. Step 6: Final answer
   x = 1,738.88