Finding the Fourth Proportional to 647.89, 971.82 and 160.94

Step by Step Solution

1. Step 1: Write the proportion equation
   647.89 : 971.82 = 160.94 : x
2. Step 2: Convert to fraction form
   647.89/971.82 = 160.94/x
3. Step 3: Cross multiply
   647.89x = 971.82 × 160.94
4. Step 4: Simplify right side
   647.89x = 156,405.72
5. Step 5: Solve for x
   x = 156,405.72/647.89
6. Step 6: Final answer
   x = 241.41