Finding the Fourth Proportional to 3,979.40, 5,491.32 and 2,301.33

Step by Step Solution

1. Step 1: Write the proportion equation
   3,979.40 : 5,491.32 = 2,301.33 : x
2. Step 2: Convert to fraction form
   3,979.40/5,491.32 = 2,301.33/x
3. Step 3: Cross multiply
   3,979.40x = 5,491.32 × 2,301.33
4. Step 4: Simplify right side
   3,979.40x = 12,637,339.46
5. Step 5: Solve for x
   x = 12,637,339.46/3,979.40
6. Step 6: Final answer
   x = 3,175.69