Finding the Fourth Proportional to 2,073.12, 3,108.06 and 774.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,073.12 : 3,108.06 = 774.42 : x
2. Step 2: Convert to fraction form
   2,073.12/3,108.06 = 774.42/x
3. Step 3: Cross multiply
   2,073.12x = 3,108.06 × 774.42
4. Step 4: Simplify right side
   2,073.12x = 2,406,943.83
5. Step 5: Solve for x
   x = 2,406,943.83/2,073.12
6. Step 6: Final answer
   x = 1,161.02