Finding the Fourth Proportional to 2,945.72, 4,418.10 and 971.33

Step by Step Solution

1. Step 1: Write the proportion equation
   2,945.72 : 4,418.10 = 971.33 : x
2. Step 2: Convert to fraction form
   2,945.72/4,418.10 = 971.33/x
3. Step 3: Cross multiply
   2,945.72x = 4,418.10 × 971.33
4. Step 4: Simplify right side
   2,945.72x = 4,291,433.07
5. Step 5: Solve for x
   x = 4,291,433.07/2,945.72
6. Step 6: Final answer
   x = 1,456.84