Finding the Fourth Proportional to 1,018.18, 1,527.67 and 433.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,018.18 : 1,527.67 = 433.31 : x
2. Step 2: Convert to fraction form
   1,018.18/1,527.67 = 433.31/x
3. Step 3: Cross multiply
   1,018.18x = 1,527.67 × 433.31
4. Step 4: Simplify right side
   1,018.18x = 661,954.69
5. Step 5: Solve for x
   x = 661,954.69/1,018.18
6. Step 6: Final answer
   x = 650.14