Finding the Fourth Proportional to 2,724.55, 4,086.73 and 875.79

Step by Step Solution

1. Step 1: Write the proportion equation
   2,724.55 : 4,086.73 = 875.79 : x
2. Step 2: Convert to fraction form
   2,724.55/4,086.73 = 875.79/x
3. Step 3: Cross multiply
   2,724.55x = 4,086.73 × 875.79
4. Step 4: Simplify right side
   2,724.55x = 3,579,117.27
5. Step 5: Solve for x
   x = 3,579,117.27/2,724.55
6. Step 6: Final answer
   x = 1,313.65