Finding the Fourth Proportional to 2,856.52, 3,940.68 and 2,225.98

Step by Step Solution

1. Step 1: Write the proportion equation
   2,856.52 : 3,940.68 = 2,225.98 : x
2. Step 2: Convert to fraction form
   2,856.52/3,940.68 = 2,225.98/x
3. Step 3: Cross multiply
   2,856.52x = 3,940.68 × 2,225.98
4. Step 4: Simplify right side
   2,856.52x = 8,771,874.87
5. Step 5: Solve for x
   x = 8,771,874.87/2,856.52
6. Step 6: Final answer
   x = 3,070.83