Finding the Fourth Proportional to 2,645.94, 3,968.28 and 1,003.26

Step by Step Solution

1. Step 1: Write the proportion equation
   2,645.94 : 3,968.28 = 1,003.26 : x
2. Step 2: Convert to fraction form
   2,645.94/3,968.28 = 1,003.26/x
3. Step 3: Cross multiply
   2,645.94x = 3,968.28 × 1,003.26
4. Step 4: Simplify right side
   2,645.94x = 3,981,216.59
5. Step 5: Solve for x
   x = 3,981,216.59/2,645.94
6. Step 6: Final answer
   x = 1,504.65