Finding the Fourth Proportional to 2,762.15, 4,141.80 and 814.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,762.15 : 4,141.80 = 814.10 : x
2. Step 2: Convert to fraction form
   2,762.15/4,141.80 = 814.10/x
3. Step 3: Cross multiply
   2,762.15x = 4,141.80 × 814.10
4. Step 4: Simplify right side
   2,762.15x = 3,371,839.38
5. Step 5: Solve for x
   x = 3,371,839.38/2,762.15
6. Step 6: Final answer
   x = 1,220.73