Finding the Fourth Proportional to 1,082.09, 1,493.40 and 662.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,082.09 : 1,493.40 = 662.72 : x
2. Step 2: Convert to fraction form
   1,082.09/1,493.40 = 662.72/x
3. Step 3: Cross multiply
   1,082.09x = 1,493.40 × 662.72
4. Step 4: Simplify right side
   1,082.09x = 989,706.05
5. Step 5: Solve for x
   x = 989,706.05/1,082.09
6. Step 6: Final answer
   x = 914.62