Finding the Fourth Proportional to 2,255.56, 3,112.60 and 1,260.83

Step by Step Solution

1. Step 1: Write the proportion equation
   2,255.56 : 3,112.60 = 1,260.83 : x
2. Step 2: Convert to fraction form
   2,255.56/3,112.60 = 1,260.83/x
3. Step 3: Cross multiply
   2,255.56x = 3,112.60 × 1,260.83
4. Step 4: Simplify right side
   2,255.56x = 3,924,471.64
5. Step 5: Solve for x
   x = 3,924,471.64/2,255.56
6. Step 6: Final answer
   x = 1,739.91