Finding the Fourth Proportional to 1,789.89, 2,470.17 and 1,003.99

Step by Step Solution

1. Step 1: Write the proportion equation
   1,789.89 : 2,470.17 = 1,003.99 : x
2. Step 2: Convert to fraction form
   1,789.89/2,470.17 = 1,003.99/x
3. Step 3: Cross multiply
   1,789.89x = 2,470.17 × 1,003.99
4. Step 4: Simplify right side
   1,789.89x = 2,480,020.96
5. Step 5: Solve for x
   x = 2,480,020.96/1,789.89
6. Step 6: Final answer
   x = 1,385.57