Finding the Fourth Proportional to 1,096.49, 1,643.21 and 575.45

Step by Step Solution

1. Step 1: Write the proportion equation
   1,096.49 : 1,643.21 = 575.45 : x
2. Step 2: Convert to fraction form
   1,096.49/1,643.21 = 575.45/x
3. Step 3: Cross multiply
   1,096.49x = 1,643.21 × 575.45
4. Step 4: Simplify right side
   1,096.49x = 945,586.43
5. Step 5: Solve for x
   x = 945,586.43/1,096.49
6. Step 6: Final answer
   x = 862.38