Finding the Fourth Proportional to 1,643.50, 2,268.06 and 945.04

Step by Step Solution

1. Step 1: Write the proportion equation
   1,643.50 : 2,268.06 = 945.04 : x
2. Step 2: Convert to fraction form
   1,643.50/2,268.06 = 945.04/x
3. Step 3: Cross multiply
   1,643.50x = 2,268.06 × 945.04
4. Step 4: Simplify right side
   1,643.50x = 2,143,407.42
5. Step 5: Solve for x
   x = 2,143,407.42/1,643.50
6. Step 6: Final answer
   x = 1,304.17