Finding the Fourth Proportional to 1,789.76, 2,469.88 and 1,003.76

Step by Step Solution

1. Step 1: Write the proportion equation
   1,789.76 : 2,469.88 = 1,003.76 : x
2. Step 2: Convert to fraction form
   1,789.76/2,469.88 = 1,003.76/x
3. Step 3: Cross multiply
   1,789.76x = 2,469.88 × 1,003.76
4. Step 4: Simplify right side
   1,789.76x = 2,479,166.75
5. Step 5: Solve for x
   x = 2,479,166.75/1,789.76
6. Step 6: Final answer
   x = 1,385.20