Finding the Fourth Proportional to 1,826.50, 2,520.57 and 1,128.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,826.50 : 2,520.57 = 1,128.28 : x
2. Step 2: Convert to fraction form
   1,826.50/2,520.57 = 1,128.28/x
3. Step 3: Cross multiply
   1,826.50x = 2,520.57 × 1,128.28
4. Step 4: Simplify right side
   1,826.50x = 2,843,908.72
5. Step 5: Solve for x
   x = 2,843,908.72/1,826.50
6. Step 6: Final answer
   x = 1,557.03