Finding the Fourth Proportional to 3,971.39, 5,958.20 and 1,198.15

Step by Step Solution

1. Step 1: Write the proportion equation
   3,971.39 : 5,958.20 = 1,198.15 : x
2. Step 2: Convert to fraction form
   3,971.39/5,958.20 = 1,198.15/x
3. Step 3: Cross multiply
   3,971.39x = 5,958.20 × 1,198.15
4. Step 4: Simplify right side
   3,971.39x = 7,138,805.43
5. Step 5: Solve for x
   x = 7,138,805.43/3,971.39
6. Step 6: Final answer
   x = 1,797.56