Finding the Fourth Proportional to 1,403.59, 1,936.92 and 814.09

Step by Step Solution

1. Step 1: Write the proportion equation
   1,403.59 : 1,936.92 = 814.09 : x
2. Step 2: Convert to fraction form
   1,403.59/1,936.92 = 814.09/x
3. Step 3: Cross multiply
   1,403.59x = 1,936.92 × 814.09
4. Step 4: Simplify right side
   1,403.59x = 1,576,827.20
5. Step 5: Solve for x
   x = 1,576,827.20/1,403.59
6. Step 6: Final answer
   x = 1,123.42