Finding the Fourth Proportional to 2,796.72, 4,196.44 and 1,980.24

Step by Step Solution

1. Step 1: Write the proportion equation
   2,796.72 : 4,196.44 = 1,980.24 : x
2. Step 2: Convert to fraction form
   2,796.72/4,196.44 = 1,980.24/x
3. Step 3: Cross multiply
   2,796.72x = 4,196.44 × 1,980.24
4. Step 4: Simplify right side
   2,796.72x = 8,309,958.35
5. Step 5: Solve for x
   x = 8,309,958.35/2,796.72
6. Step 6: Final answer
   x = 2,971.32