Finding the Fourth Proportional to 2,962.96, 4,443.89 and 771.55

Step by Step Solution

1. Step 1: Write the proportion equation
   2,962.96 : 4,443.89 = 771.55 : x
2. Step 2: Convert to fraction form
   2,962.96/4,443.89 = 771.55/x
3. Step 3: Cross multiply
   2,962.96x = 4,443.89 × 771.55
4. Step 4: Simplify right side
   2,962.96x = 3,428,668.36
5. Step 5: Solve for x
   x = 3,428,668.36/2,962.96
6. Step 6: Final answer
   x = 1,157.18