Finding the Fourth Proportional to 1,826.69, 2,520.87 and 1,040.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,826.69 : 2,520.87 = 1,040.72 : x
2. Step 2: Convert to fraction form
   1,826.69/2,520.87 = 1,040.72/x
3. Step 3: Cross multiply
   1,826.69x = 2,520.87 × 1,040.72
4. Step 4: Simplify right side
   1,826.69x = 2,623,519.83
5. Step 5: Solve for x
   x = 2,623,519.83/1,826.69
6. Step 6: Final answer
   x = 1,436.22