Finding the Fourth Proportional to 1,724.39, 2,379.69 and 938.44

Step by Step Solution

1. Step 1: Write the proportion equation
   1,724.39 : 2,379.69 = 938.44 : x
2. Step 2: Convert to fraction form
   1,724.39/2,379.69 = 938.44/x
3. Step 3: Cross multiply
   1,724.39x = 2,379.69 × 938.44
4. Step 4: Simplify right side
   1,724.39x = 2,233,196.28
5. Step 5: Solve for x
   x = 2,233,196.28/1,724.39
6. Step 6: Final answer
   x = 1,295.06