Finding the Fourth Proportional to 2,772.28, 4,158.34 and 824.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,772.28 : 4,158.34 = 824.52 : x
2. Step 2: Convert to fraction form
   2,772.28/4,158.34 = 824.52/x
3. Step 3: Cross multiply
   2,772.28x = 4,158.34 × 824.52
4. Step 4: Simplify right side
   2,772.28x = 3,428,634.50
5. Step 5: Solve for x
   x = 3,428,634.50/2,772.28
6. Step 6: Final answer
   x = 1,236.76