Finding the Fourth Proportional to 2,270.48, 3,133.38 and 1,275.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,270.48 : 3,133.38 = 1,275.72 : x
2. Step 2: Convert to fraction form
   2,270.48/3,133.38 = 1,275.72/x
3. Step 3: Cross multiply
   2,270.48x = 3,133.38 × 1,275.72
4. Step 4: Simplify right side
   2,270.48x = 3,997,315.53
5. Step 5: Solve for x
   x = 3,997,315.53/2,270.48
6. Step 6: Final answer
   x = 1,760.56