Finding the Fourth Proportional to 1,791.75, 2,472.92 and 1,128.09

Step by Step Solution

1. Step 1: Write the proportion equation
   1,791.75 : 2,472.92 = 1,128.09 : x
2. Step 2: Convert to fraction form
   1,791.75/2,472.92 = 1,128.09/x
3. Step 3: Cross multiply
   1,791.75x = 2,472.92 × 1,128.09
4. Step 4: Simplify right side
   1,791.75x = 2,789,676.32
5. Step 5: Solve for x
   x = 2,789,676.32/1,791.75
6. Step 6: Final answer
   x = 1,556.96