Finding the Fourth Proportional to 2,463.09, 3,695.34 and 820.71

Step by Step Solution

1. Step 1: Write the proportion equation
   2,463.09 : 3,695.34 = 820.71 : x
2. Step 2: Convert to fraction form
   2,463.09/3,695.34 = 820.71/x
3. Step 3: Cross multiply
   2,463.09x = 3,695.34 × 820.71
4. Step 4: Simplify right side
   2,463.09x = 3,032,802.49
5. Step 5: Solve for x
   x = 3,032,802.49/2,463.09
6. Step 6: Final answer
   x = 1,231.30