Finding the Fourth Proportional to 1,722.69, 2,377.27 and 936.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,722.69 : 2,377.27 = 936.72 : x
2. Step 2: Convert to fraction form
   1,722.69/2,377.27 = 936.72/x
3. Step 3: Cross multiply
   1,722.69x = 2,377.27 × 936.72
4. Step 4: Simplify right side
   1,722.69x = 2,226,836.35
5. Step 5: Solve for x
   x = 2,226,836.35/1,722.69
6. Step 6: Final answer
   x = 1,292.65