Finding the Fourth Proportional to 1,982.78, 2,736.27 and 1,098.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,982.78 : 2,736.27 = 1,098.56 : x
2. Step 2: Convert to fraction form
   1,982.78/2,736.27 = 1,098.56/x
3. Step 3: Cross multiply
   1,982.78x = 2,736.27 × 1,098.56
4. Step 4: Simplify right side
   1,982.78x = 3,005,937.60
5. Step 5: Solve for x
   x = 3,005,937.60/1,982.78
6. Step 6: Final answer
   x = 1,516.03