Finding the Fourth Proportional to 1,456.50, 2,007.18 and 931.62

Step by Step Solution

1. Step 1: Write the proportion equation
   1,456.50 : 2,007.18 = 931.62 : x
2. Step 2: Convert to fraction form
   1,456.50/2,007.18 = 931.62/x
3. Step 3: Cross multiply
   1,456.50x = 2,007.18 × 931.62
4. Step 4: Simplify right side
   1,456.50x = 1,869,929.03
5. Step 5: Solve for x
   x = 1,869,929.03/1,456.50
6. Step 6: Final answer
   x = 1,283.85