Finding the Fourth Proportional to 3,958.38, 5,462.34 and 2,189.94

Step by Step Solution

1. Step 1: Write the proportion equation
   3,958.38 : 5,462.34 = 2,189.94 : x
2. Step 2: Convert to fraction form
   3,958.38/5,462.34 = 2,189.94/x
3. Step 3: Cross multiply
   3,958.38x = 5,462.34 × 2,189.94
4. Step 4: Simplify right side
   3,958.38x = 11,962,196.86
5. Step 5: Solve for x
   x = 11,962,196.86/3,958.38
6. Step 6: Final answer
   x = 3,021.99