Finding the Fourth Proportional to 1,076.82, 1,485.45 and 814.38

Step by Step Solution

1. Step 1: Write the proportion equation
   1,076.82 : 1,485.45 = 814.38 : x
2. Step 2: Convert to fraction form
   1,076.82/1,485.45 = 814.38/x
3. Step 3: Cross multiply
   1,076.82x = 1,485.45 × 814.38
4. Step 4: Simplify right side
   1,076.82x = 1,209,720.77
5. Step 5: Solve for x
   x = 1,209,720.77/1,076.82
6. Step 6: Final answer
   x = 1,123.42