Finding the Fourth Proportional to 2,956.89, 4,435.28 and 765.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,956.89 : 4,435.28 = 765.56 : x
2. Step 2: Convert to fraction form
   2,956.89/4,435.28 = 765.56/x
3. Step 3: Cross multiply
   2,956.89x = 4,435.28 × 765.56
4. Step 4: Simplify right side
   2,956.89x = 3,395,468.46
5. Step 5: Solve for x
   x = 3,395,468.46/2,956.89
6. Step 6: Final answer
   x = 1,148.32