Finding the Fourth Proportional to 2,822.72, 3,891.62 and 2,316.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,822.72 : 3,891.62 = 2,316.72 : x
2. Step 2: Convert to fraction form
   2,822.72/3,891.62 = 2,316.72/x
3. Step 3: Cross multiply
   2,822.72x = 3,891.62 × 2,316.72
4. Step 4: Simplify right side
   2,822.72x = 9,015,793.89
5. Step 5: Solve for x
   x = 9,015,793.89/2,822.72
6. Step 6: Final answer
   x = 3,194.01