Finding the Fourth Proportional to 2,042.59, 3,064.17 and 810.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,042.59 : 3,064.17 = 810.12 : x
2. Step 2: Convert to fraction form
   2,042.59/3,064.17 = 810.12/x
3. Step 3: Cross multiply
   2,042.59x = 3,064.17 × 810.12
4. Step 4: Simplify right side
   2,042.59x = 2,482,343.38
5. Step 5: Solve for x
   x = 2,482,343.38/2,042.59
6. Step 6: Final answer
   x = 1,215.29