Finding the Fourth Proportional to 1,976.72, 2,964.60 and 1,331.36

Step by Step Solution

1. Step 1: Write the proportion equation
   1,976.72 : 2,964.60 = 1,331.36 : x
2. Step 2: Convert to fraction form
   1,976.72/2,964.60 = 1,331.36/x
3. Step 3: Cross multiply
   1,976.72x = 2,964.60 × 1,331.36
4. Step 4: Simplify right side
   1,976.72x = 3,946,949.86
5. Step 5: Solve for x
   x = 3,946,949.86/1,976.72
6. Step 6: Final answer
   x = 1,996.72