Finding the Fourth Proportional to 2,255.47, 3,112.72 and 1,260.92

Step by Step Solution

1. Step 1: Write the proportion equation
   2,255.47 : 3,112.72 = 1,260.92 : x
2. Step 2: Convert to fraction form
   2,255.47/3,112.72 = 1,260.92/x
3. Step 3: Cross multiply
   2,255.47x = 3,112.72 × 1,260.92
4. Step 4: Simplify right side
   2,255.47x = 3,924,895.53
5. Step 5: Solve for x
   x = 3,924,895.53/2,255.47
6. Step 6: Final answer
   x = 1,740.17