Finding the Fourth Proportional to 1,082.92, 1,623.18 and 672.04

Step by Step Solution

1. Step 1: Write the proportion equation
   1,082.92 : 1,623.18 = 672.04 : x
2. Step 2: Convert to fraction form
   1,082.92/1,623.18 = 672.04/x
3. Step 3: Cross multiply
   1,082.92x = 1,623.18 × 672.04
4. Step 4: Simplify right side
   1,082.92x = 1,090,841.89
5. Step 5: Solve for x
   x = 1,090,841.89/1,082.92
6. Step 6: Final answer
   x = 1,007.32