Finding the Fourth Proportional to 2,043.09, 3,064.78 and 810.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,043.09 : 3,064.78 = 810.50 : x
2. Step 2: Convert to fraction form
   2,043.09/3,064.78 = 810.50/x
3. Step 3: Cross multiply
   2,043.09x = 3,064.78 × 810.50
4. Step 4: Simplify right side
   2,043.09x = 2,484,004.19
5. Step 5: Solve for x
   x = 2,484,004.19/2,043.09
6. Step 6: Final answer
   x = 1,215.81