Finding the Fourth Proportional to 1,722.76, 2,377.42 and 936.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,722.76 : 2,377.42 = 936.83 : x
2. Step 2: Convert to fraction form
   1,722.76/2,377.42 = 936.83/x
3. Step 3: Cross multiply
   1,722.76x = 2,377.42 × 936.83
4. Step 4: Simplify right side
   1,722.76x = 2,227,241.98
5. Step 5: Solve for x
   x = 2,227,241.98/1,722.76
6. Step 6: Final answer
   x = 1,292.84