Finding the Fourth Proportional to 2,645.68, 3,968.44 and 1,002.48

Step by Step Solution

1. Step 1: Write the proportion equation
   2,645.68 : 3,968.44 = 1,002.48 : x
2. Step 2: Convert to fraction form
   2,645.68/3,968.44 = 1,002.48/x
3. Step 3: Cross multiply
   2,645.68x = 3,968.44 × 1,002.48
4. Step 4: Simplify right side
   2,645.68x = 3,978,281.73
5. Step 5: Solve for x
   x = 3,978,281.73/2,645.68
6. Step 6: Final answer
   x = 1,503.69