Finding the Fourth Proportional to 2,958.72, 4,438.30 and 767.46

Step by Step Solution

1. Step 1: Write the proportion equation
   2,958.72 : 4,438.30 = 767.46 : x
2. Step 2: Convert to fraction form
   2,958.72/4,438.30 = 767.46/x
3. Step 3: Cross multiply
   2,958.72x = 4,438.30 × 767.46
4. Step 4: Simplify right side
   2,958.72x = 3,406,217.72
5. Step 5: Solve for x
   x = 3,406,217.72/2,958.72
6. Step 6: Final answer
   x = 1,151.25