Finding the Fourth Proportional to 1,435.40, 1,979.43 and 1,082.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,435.40 : 1,979.43 = 1,082.18 : x
2. Step 2: Convert to fraction form
   1,435.40/1,979.43 = 1,082.18/x
3. Step 3: Cross multiply
   1,435.40x = 1,979.43 × 1,082.18
4. Step 4: Simplify right side
   1,435.40x = 2,142,099.56
5. Step 5: Solve for x
   x = 2,142,099.56/1,435.40
6. Step 6: Final answer
   x = 1,492.34