Finding the Fourth Proportional to 2,722.45, 4,083.83 and 774.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,722.45 : 4,083.83 = 774.50 : x
2. Step 2: Convert to fraction form
   2,722.45/4,083.83 = 774.50/x
3. Step 3: Cross multiply
   2,722.45x = 4,083.83 × 774.50
4. Step 4: Simplify right side
   2,722.45x = 3,162,926.34
5. Step 5: Solve for x
   x = 3,162,926.34/2,722.45
6. Step 6: Final answer
   x = 1,161.79