Finding the Fourth Proportional to 2,042.19, 3,064.31 and 810.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,042.19 : 3,064.31 = 810.50 : x
2. Step 2: Convert to fraction form
   2,042.19/3,064.31 = 810.50/x
3. Step 3: Cross multiply
   2,042.19x = 3,064.31 × 810.50
4. Step 4: Simplify right side
   2,042.19x = 2,483,606.92
5. Step 5: Solve for x
   x = 2,483,606.92/2,042.19
6. Step 6: Final answer
   x = 1,216.15