Finding the Fourth Proportional to 2,820.72, 3,882.38 and 2,599.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,820.72 : 3,882.38 = 2,599.28 : x
2. Step 2: Convert to fraction form
   2,820.72/3,882.38 = 2,599.28/x
3. Step 3: Cross multiply
   2,820.72x = 3,882.38 × 2,599.28
4. Step 4: Simplify right side
   2,820.72x = 10,091,360.28
5. Step 5: Solve for x
   x = 10,091,360.28/2,820.72
6. Step 6: Final answer
   x = 3,577.58