Finding the Fourth Proportional to 1,767.48, 2,648.94 and 726.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,767.48 : 2,648.94 = 726.31 : x
2. Step 2: Convert to fraction form
   1,767.48/2,648.94 = 726.31/x
3. Step 3: Cross multiply
   1,767.48x = 2,648.94 × 726.31
4. Step 4: Simplify right side
   1,767.48x = 1,923,951.61
5. Step 5: Solve for x
   x = 1,923,951.61/1,767.48
6. Step 6: Final answer
   x = 1,088.53