Finding the Fourth Proportional to 1,098.20, 1,636.71 and 1,096.49

Step by Step Solution

1. Step 1: Write the proportion equation
   1,098.20 : 1,636.71 = 1,096.49 : x
2. Step 2: Convert to fraction form
   1,098.20/1,636.71 = 1,096.49/x
3. Step 3: Cross multiply
   1,098.20x = 1,636.71 × 1,096.49
4. Step 4: Simplify right side
   1,098.20x = 1,794,627.96
5. Step 5: Solve for x
   x = 1,794,627.96/1,098.20
6. Step 6: Final answer
   x = 1,634.16