Finding the Fourth Proportional to 3,964.50, 5,947.80 and 1,191.18

Step by Step Solution

1. Step 1: Write the proportion equation
   3,964.50 : 5,947.80 = 1,191.18 : x
2. Step 2: Convert to fraction form
   3,964.50/5,947.80 = 1,191.18/x
3. Step 3: Cross multiply
   3,964.50x = 5,947.80 × 1,191.18
4. Step 4: Simplify right side
   3,964.50x = 7,084,900.40
5. Step 5: Solve for x
   x = 7,084,900.40/3,964.50
6. Step 6: Final answer
   x = 1,787.09