Finding the Fourth Proportional to 3,005.05, 4,507.06 and 813.27

Step by Step Solution

1. Step 1: Write the proportion equation
   3,005.05 : 4,507.06 = 813.27 : x
2. Step 2: Convert to fraction form
   3,005.05/4,507.06 = 813.27/x
3. Step 3: Cross multiply
   3,005.05x = 4,507.06 × 813.27
4. Step 4: Simplify right side
   3,005.05x = 3,665,456.69
5. Step 5: Solve for x
   x = 3,665,456.69/3,005.05
6. Step 6: Final answer
   x = 1,219.77