Finding the Fourth Proportional to 2,566.07, 3,849.47 and 810.47

Step by Step Solution

1. Step 1: Write the proportion equation
   2,566.07 : 3,849.47 = 810.47 : x
2. Step 2: Convert to fraction form
   2,566.07/3,849.47 = 810.47/x
3. Step 3: Cross multiply
   2,566.07x = 3,849.47 × 810.47
4. Step 4: Simplify right side
   2,566.07x = 3,119,879.95
5. Step 5: Solve for x
   x = 3,119,879.95/2,566.07
6. Step 6: Final answer
   x = 1,215.82