Finding the Fourth Proportional to 2,808, 3,876.64 and 1,814.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,808 : 3,876.64 = 1,814.72 : x
2. Step 2: Convert to fraction form
   2,808/3,876.64 = 1,814.72/x
3. Step 3: Cross multiply
   2,808x = 3,876.64 × 1,814.72
4. Step 4: Simplify right side
   2,808x = 7,035,016.14
5. Step 5: Solve for x
   x = 7,035,016.14/2,808
6. Step 6: Final answer
   x = 2,505.35