Finding the Fourth Proportional to 2,326.31, 3,488.56 and 939.39

Step by Step Solution

1. Step 1: Write the proportion equation
   2,326.31 : 3,488.56 = 939.39 : x
2. Step 2: Convert to fraction form
   2,326.31/3,488.56 = 939.39/x
3. Step 3: Cross multiply
   2,326.31x = 3,488.56 × 939.39
4. Step 4: Simplify right side
   2,326.31x = 3,277,116.03
5. Step 5: Solve for x
   x = 3,277,116.03/2,326.31
6. Step 6: Final answer
   x = 1,408.72