Finding the Fourth Proportional to 3,964.37, 5,947.46 and 1,191.09

Step by Step Solution

1. Step 1: Write the proportion equation
   3,964.37 : 5,947.46 = 1,191.09 : x
2. Step 2: Convert to fraction form
   3,964.37/5,947.46 = 1,191.09/x
3. Step 3: Cross multiply
   3,964.37x = 5,947.46 × 1,191.09
4. Step 4: Simplify right side
   3,964.37x = 7,083,987.65
5. Step 5: Solve for x
   x = 7,083,987.65/3,964.37
6. Step 6: Final answer
   x = 1,786.91