Finding the Fourth Proportional to 2,956.42, 4,434.88 and 765.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,956.42 : 4,434.88 = 765.12 : x
2. Step 2: Convert to fraction form
   2,956.42/4,434.88 = 765.12/x
3. Step 3: Cross multiply
   2,956.42x = 4,434.88 × 765.12
4. Step 4: Simplify right side
   2,956.42x = 3,393,215.39
5. Step 5: Solve for x
   x = 3,393,215.39/2,956.42
6. Step 6: Final answer
   x = 1,147.74