Finding the Fourth Proportional to 1,359.72, 1,873.33 and 939.33

Step by Step Solution

1. Step 1: Write the proportion equation
   1,359.72 : 1,873.33 = 939.33 : x
2. Step 2: Convert to fraction form
   1,359.72/1,873.33 = 939.33/x
3. Step 3: Cross multiply
   1,359.72x = 1,873.33 × 939.33
4. Step 4: Simplify right side
   1,359.72x = 1,759,672.72
5. Step 5: Solve for x
   x = 1,759,672.72/1,359.72
6. Step 6: Final answer
   x = 1,294.14