Finding the Fourth Proportional to 1,079.02, 1,616.37 and 645.94

Step by Step Solution

1. Step 1: Write the proportion equation
   1,079.02 : 1,616.37 = 645.94 : x
2. Step 2: Convert to fraction form
   1,079.02/1,616.37 = 645.94/x
3. Step 3: Cross multiply
   1,079.02x = 1,616.37 × 645.94
4. Step 4: Simplify right side
   1,079.02x = 1,044,078.04
5. Step 5: Solve for x
   x = 1,044,078.04/1,079.02
6. Step 6: Final answer
   x = 967.62