Finding the Fourth Proportional to 2,814.30, 3,900.15 and 2,774.67

Step by Step Solution

1. Step 1: Write the proportion equation
   2,814.30 : 3,900.15 = 2,774.67 : x
2. Step 2: Convert to fraction form
   2,814.30/3,900.15 = 2,774.67/x
3. Step 3: Cross multiply
   2,814.30x = 3,900.15 × 2,774.67
4. Step 4: Simplify right side
   2,814.30x = 10,821,614.57
5. Step 5: Solve for x
   x = 10,821,614.57/2,814.30
6. Step 6: Final answer
   x = 3,845.22