Finding the Fourth Proportional to 1,082.30, 1,492.90 and 662.81

Step by Step Solution

1. Step 1: Write the proportion equation
   1,082.30 : 1,492.90 = 662.81 : x
2. Step 2: Convert to fraction form
   1,082.30/1,492.90 = 662.81/x
3. Step 3: Cross multiply
   1,082.30x = 1,492.90 × 662.81
4. Step 4: Simplify right side
   1,082.30x = 989,499.93
5. Step 5: Solve for x
   x = 989,499.93/1,082.30
6. Step 6: Final answer
   x = 914.26