Finding the Fourth Proportional to 2,962.53, 4,443.69 and 771.21

Step by Step Solution

1. Step 1: Write the proportion equation
   2,962.53 : 4,443.69 = 771.21 : x
2. Step 2: Convert to fraction form
   2,962.53/4,443.69 = 771.21/x
3. Step 3: Cross multiply
   2,962.53x = 4,443.69 × 771.21
4. Step 4: Simplify right side
   2,962.53x = 3,427,018.16
5. Step 5: Solve for x
   x = 3,427,018.16/2,962.53
6. Step 6: Final answer
   x = 1,156.79