Finding the Fourth Proportional to 2,160.16, 3,241.50 and 774.69

Step by Step Solution

1. Step 1: Write the proportion equation
   2,160.16 : 3,241.50 = 774.69 : x
2. Step 2: Convert to fraction form
   2,160.16/3,241.50 = 774.69/x
3. Step 3: Cross multiply
   2,160.16x = 3,241.50 × 774.69
4. Step 4: Simplify right side
   2,160.16x = 2,511,157.64
5. Step 5: Solve for x
   x = 2,511,157.64/2,160.16
6. Step 6: Final answer
   x = 1,162.49