Finding the Fourth Proportional to 1,789.98, 2,470.32 and 1,003.92

Step by Step Solution

1. Step 1: Write the proportion equation
   1,789.98 : 2,470.32 = 1,003.92 : x
2. Step 2: Convert to fraction form
   1,789.98/2,470.32 = 1,003.92/x
3. Step 3: Cross multiply
   1,789.98x = 2,470.32 × 1,003.92
4. Step 4: Simplify right side
   1,789.98x = 2,480,003.65
5. Step 5: Solve for x
   x = 2,480,003.65/1,789.98
6. Step 6: Final answer
   x = 1,385.49