Finding the Fourth Proportional to 1,050.31, 1,448.92 and 815.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,050.31 : 1,448.92 = 815.82 : x
2. Step 2: Convert to fraction form
   1,050.31/1,448.92 = 815.82/x
3. Step 3: Cross multiply
   1,050.31x = 1,448.92 × 815.82
4. Step 4: Simplify right side
   1,050.31x = 1,182,057.91
5. Step 5: Solve for x
   x = 1,182,057.91/1,050.31
6. Step 6: Final answer
   x = 1,125.44