Finding the Fourth Proportional to 2,820.63, 3,857.94 and 2,775.27

Step by Step Solution

1. Step 1: Write the proportion equation
   2,820.63 : 3,857.94 = 2,775.27 : x
2. Step 2: Convert to fraction form
   2,820.63/3,857.94 = 2,775.27/x
3. Step 3: Cross multiply
   2,820.63x = 3,857.94 × 2,775.27
4. Step 4: Simplify right side
   2,820.63x = 10,706,825.14
5. Step 5: Solve for x
   x = 10,706,825.14/2,820.63
6. Step 6: Final answer
   x = 3,795.90