Finding the Fourth Proportional to 2,069.16, 3,104.98 and 771.54

Step by Step Solution

1. Step 1: Write the proportion equation
   2,069.16 : 3,104.98 = 771.54 : x
2. Step 2: Convert to fraction form
   2,069.16/3,104.98 = 771.54/x
3. Step 3: Cross multiply
   2,069.16x = 3,104.98 × 771.54
4. Step 4: Simplify right side
   2,069.16x = 2,395,616.27
5. Step 5: Solve for x
   x = 2,395,616.27/2,069.16
6. Step 6: Final answer
   x = 1,157.77