Finding the Fourth Proportional to 3,959.04, 5,939.89 and 1,326.81

Step by Step Solution

1. Step 1: Write the proportion equation
   3,959.04 : 5,939.89 = 1,326.81 : x
2. Step 2: Convert to fraction form
   3,959.04/5,939.89 = 1,326.81/x
3. Step 3: Cross multiply
   3,959.04x = 5,939.89 × 1,326.81
4. Step 4: Simplify right side
   3,959.04x = 7,881,105.45
5. Step 5: Solve for x
   x = 7,881,105.45/3,959.04
6. Step 6: Final answer
   x = 1,990.66