Finding the Fourth Proportional to 2,648.27, 3,970.86 and 1,003.76

Step by Step Solution

1. Step 1: Write the proportion equation
   2,648.27 : 3,970.86 = 1,003.76 : x
2. Step 2: Convert to fraction form
   2,648.27/3,970.86 = 1,003.76/x
3. Step 3: Cross multiply
   2,648.27x = 3,970.86 × 1,003.76
4. Step 4: Simplify right side
   2,648.27x = 3,985,770.58
5. Step 5: Solve for x
   x = 3,985,770.58/2,648.27
6. Step 6: Final answer
   x = 1,505.05