Finding the Fourth Proportional to 2,724.52, 4,085.58 and 776.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,724.52 : 4,085.58 = 776.28 : x
2. Step 2: Convert to fraction form
   2,724.52/4,085.58 = 776.28/x
3. Step 3: Cross multiply
   2,724.52x = 4,085.58 × 776.28
4. Step 4: Simplify right side
   2,724.52x = 3,171,554.04
5. Step 5: Solve for x
   x = 3,171,554.04/2,724.52
6. Step 6: Final answer
   x = 1,164.08