Finding the Fourth Proportional to 1,096.31, 1,643.37 and 365.39

Step by Step Solution

1. Step 1: Write the proportion equation
   1,096.31 : 1,643.37 = 365.39 : x
2. Step 2: Convert to fraction form
   1,096.31/1,643.37 = 365.39/x
3. Step 3: Cross multiply
   1,096.31x = 1,643.37 × 365.39
4. Step 4: Simplify right side
   1,096.31x = 600,462.75
5. Step 5: Solve for x
   x = 600,462.75/1,096.31
6. Step 6: Final answer
   x = 547.72