Finding the Fourth Proportional to 2,255.01, 3,111.93 and 1,260.35

Step by Step Solution

1. Step 1: Write the proportion equation
   2,255.01 : 3,111.93 = 1,260.35 : x
2. Step 2: Convert to fraction form
   2,255.01/3,111.93 = 1,260.35/x
3. Step 3: Cross multiply
   2,255.01x = 3,111.93 × 1,260.35
4. Step 4: Simplify right side
   2,255.01x = 3,922,105.42
5. Step 5: Solve for x
   x = 3,922,105.42/2,255.01
6. Step 6: Final answer
   x = 1,739.29