Finding the Fourth Proportional to 1,049.31, 1,448.73 and 812.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,049.31 : 1,448.73 = 812.82 : x
2. Step 2: Convert to fraction form
   1,049.31/1,448.73 = 812.82/x
3. Step 3: Cross multiply
   1,049.31x = 1,448.73 × 812.82
4. Step 4: Simplify right side
   1,049.31x = 1,177,556.72
5. Step 5: Solve for x
   x = 1,177,556.72/1,049.31
6. Step 6: Final answer
   x = 1,122.22