Finding the Fourth Proportional to 2,826.39, 3,892.55 and 2,277.21

Step by Step Solution

1. Step 1: Write the proportion equation
   2,826.39 : 3,892.55 = 2,277.21 : x
2. Step 2: Convert to fraction form
   2,826.39/3,892.55 = 2,277.21/x
3. Step 3: Cross multiply
   2,826.39x = 3,892.55 × 2,277.21
4. Step 4: Simplify right side
   2,826.39x = 8,864,142.40
5. Step 5: Solve for x
   x = 8,864,142.40/2,826.39
6. Step 6: Final answer
   x = 3,136.21