Finding the Fourth Proportional to 1,980.39, 2,732.89 and 1,096.21

Step by Step Solution

1. Step 1: Write the proportion equation
   1,980.39 : 2,732.89 = 1,096.21 : x
2. Step 2: Convert to fraction form
   1,980.39/2,732.89 = 1,096.21/x
3. Step 3: Cross multiply
   1,980.39x = 2,732.89 × 1,096.21
4. Step 4: Simplify right side
   1,980.39x = 2,995,821.35
5. Step 5: Solve for x
   x = 2,995,821.35/1,980.39
6. Step 6: Final answer
   x = 1,512.74