Finding the Fourth Proportional to 1,724.52, 2,379.88 and 938.57

Step by Step Solution

1. Step 1: Write the proportion equation
   1,724.52 : 2,379.88 = 938.57 : x
2. Step 2: Convert to fraction form
   1,724.52/2,379.88 = 938.57/x
3. Step 3: Cross multiply
   1,724.52x = 2,379.88 × 938.57
4. Step 4: Simplify right side
   1,724.52x = 2,233,672.07
5. Step 5: Solve for x
   x = 2,233,672.07/1,724.52
6. Step 6: Final answer
   x = 1,295.24