Finding the Fourth Proportional to 1,253.39, 1,728.71 and 755.51

Step by Step Solution

1. Step 1: Write the proportion equation
   1,253.39 : 1,728.71 = 755.51 : x
2. Step 2: Convert to fraction form
   1,253.39/1,728.71 = 755.51/x
3. Step 3: Cross multiply
   1,253.39x = 1,728.71 × 755.51
4. Step 4: Simplify right side
   1,253.39x = 1,306,045.27
5. Step 5: Solve for x
   x = 1,306,045.27/1,253.39
6. Step 6: Final answer
   x = 1,042.01