Finding the Fourth Proportional to 2,500.38, 3,749.67 and 856.49

Step by Step Solution

1. Step 1: Write the proportion equation
   2,500.38 : 3,749.67 = 856.49 : x
2. Step 2: Convert to fraction form
   2,500.38/3,749.67 = 856.49/x
3. Step 3: Cross multiply
   2,500.38x = 3,749.67 × 856.49
4. Step 4: Simplify right side
   2,500.38x = 3,211,536.11
5. Step 5: Solve for x
   x = 3,211,536.11/2,500.38
6. Step 6: Final answer
   x = 1,284.42