Finding the Fourth Proportional to 1,018.43, 1,526.96 and 470.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,018.43 : 1,526.96 = 470.31 : x
2. Step 2: Convert to fraction form
   1,018.43/1,526.96 = 470.31/x
3. Step 3: Cross multiply
   1,018.43x = 1,526.96 × 470.31
4. Step 4: Simplify right side
   1,018.43x = 718,144.56
5. Step 5: Solve for x
   x = 718,144.56/1,018.43
6. Step 6: Final answer
   x = 705.15