Finding the Fourth Proportional to 1,722.84, 2,377.50 and 936.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,722.84 : 2,377.50 = 936.89 : x
2. Step 2: Convert to fraction form
   1,722.84/2,377.50 = 936.89/x
3. Step 3: Cross multiply
   1,722.84x = 2,377.50 × 936.89
4. Step 4: Simplify right side
   1,722.84x = 2,227,444.09
5. Step 5: Solve for x
   x = 2,227,444.09/1,722.84
6. Step 6: Final answer
   x = 1,292.89