Finding the Fourth Proportional to 3,959.91, 5,937.86 and 1,326.49

Step by Step Solution

1. Step 1: Write the proportion equation
   3,959.91 : 5,937.86 = 1,326.49 : x
2. Step 2: Convert to fraction form
   3,959.91/5,937.86 = 1,326.49/x
3. Step 3: Cross multiply
   3,959.91x = 5,937.86 × 1,326.49
4. Step 4: Simplify right side
   3,959.91x = 7,876,500.38
5. Step 5: Solve for x
   x = 7,876,500.38/3,959.91
6. Step 6: Final answer
   x = 1,989.06