Finding the Fourth Proportional to 1,127.72, 1,556.42 and 814.00

Step by Step Solution

1. Step 1: Write the proportion equation
   1,127.72 : 1,556.42 = 814.00 : x
2. Step 2: Convert to fraction form
   1,127.72/1,556.42 = 814.00/x
3. Step 3: Cross multiply
   1,127.72x = 1,556.42 × 814.00
4. Step 4: Simplify right side
   1,127.72x = 1,266,920.84
5. Step 5: Solve for x
   x = 1,266,920.84/1,127.72
6. Step 6: Final answer
   x = 1,123.43