Finding the Fourth Proportional to 2,956.71, 4,435.31 and 765.48

Step by Step Solution

1. Step 1: Write the proportion equation
   2,956.71 : 4,435.31 = 765.48 : x
2. Step 2: Convert to fraction form
   2,956.71/4,435.31 = 765.48/x
3. Step 3: Cross multiply
   2,956.71x = 4,435.31 × 765.48
4. Step 4: Simplify right side
   2,956.71x = 3,395,141.10
5. Step 5: Solve for x
   x = 3,395,141.10/2,956.71
6. Step 6: Final answer
   x = 1,148.28