Finding the Fourth Proportional to 2,110.38, 3,164.25 and 810.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,110.38 : 3,164.25 = 810.30 : x
2. Step 2: Convert to fraction form
   2,110.38/3,164.25 = 810.30/x
3. Step 3: Cross multiply
   2,110.38x = 3,164.25 × 810.30
4. Step 4: Simplify right side
   2,110.38x = 2,563,991.78
5. Step 5: Solve for x
   x = 2,563,991.78/2,110.38
6. Step 6: Final answer
   x = 1,214.94