Finding the Fourth Proportional to 1,789.80, 2,469.90 and 1,003.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,789.80 : 2,469.90 = 1,003.83 : x
2. Step 2: Convert to fraction form
   1,789.80/2,469.90 = 1,003.83/x
3. Step 3: Cross multiply
   1,789.80x = 2,469.90 × 1,003.83
4. Step 4: Simplify right side
   1,789.80x = 2,479,359.72
5. Step 5: Solve for x
   x = 2,479,359.72/1,789.80
6. Step 6: Final answer
   x = 1,385.27