Finding the Fourth Proportional to 1,789.88, 2,470.16 and 1,003.96

Step by Step Solution

1. Step 1: Write the proportion equation
   1,789.88 : 2,470.16 = 1,003.96 : x
2. Step 2: Convert to fraction form
   1,789.88/2,470.16 = 1,003.96/x
3. Step 3: Cross multiply
   1,789.88x = 2,470.16 × 1,003.96
4. Step 4: Simplify right side
   1,789.88x = 2,479,941.83
5. Step 5: Solve for x
   x = 2,479,941.83/1,789.88
6. Step 6: Final answer
   x = 1,385.54