Finding the Fourth Proportional to 1,789.90, 2,469.49 and 1,003.79

Step by Step Solution

1. Step 1: Write the proportion equation
   1,789.90 : 2,469.49 = 1,003.79 : x
2. Step 2: Convert to fraction form
   1,789.90/2,469.49 = 1,003.79/x
3. Step 3: Cross multiply
   1,789.90x = 2,469.49 × 1,003.79
4. Step 4: Simplify right side
   1,789.90x = 2,478,853.03
5. Step 5: Solve for x
   x = 2,478,853.03/1,789.90
6. Step 6: Final answer
   x = 1,384.91