Finding the Fourth Proportional to 1,791.74, 2,472.83 and 1,128.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,791.74 : 2,472.83 = 1,128.59 : x
2. Step 2: Convert to fraction form
   1,791.74/2,472.83 = 1,128.59/x
3. Step 3: Cross multiply
   1,791.74x = 2,472.83 × 1,128.59
4. Step 4: Simplify right side
   1,791.74x = 2,790,793.20
5. Step 5: Solve for x
   x = 2,790,793.20/1,791.74
6. Step 6: Final answer
   x = 1,557.59