Finding the Fourth Proportional to 1,096.50, 1,643.52 and 549.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,096.50 : 1,643.52 = 549.15 : x
2. Step 2: Convert to fraction form
   1,096.50/1,643.52 = 549.15/x
3. Step 3: Cross multiply
   1,096.50x = 1,643.52 × 549.15
4. Step 4: Simplify right side
   1,096.50x = 902,539.01
5. Step 5: Solve for x
   x = 902,539.01/1,096.50
6. Step 6: Final answer
   x = 823.11