Finding the Fourth Proportional to 1,724.05, 2,379.15 and 938.08

Step by Step Solution

1. Step 1: Write the proportion equation
   1,724.05 : 2,379.15 = 938.08 : x
2. Step 2: Convert to fraction form
   1,724.05/2,379.15 = 938.08/x
3. Step 3: Cross multiply
   1,724.05x = 2,379.15 × 938.08
4. Step 4: Simplify right side
   1,724.05x = 2,231,833.03
5. Step 5: Solve for x
   x = 2,231,833.03/1,724.05
6. Step 6: Final answer
   x = 1,294.53