Finding the Fourth Proportional to 1,018.42, 1,406.53 and 799.04

Step by Step Solution

1. Step 1: Write the proportion equation
   1,018.42 : 1,406.53 = 799.04 : x
2. Step 2: Convert to fraction form
   1,018.42/1,406.53 = 799.04/x
3. Step 3: Cross multiply
   1,018.42x = 1,406.53 × 799.04
4. Step 4: Simplify right side
   1,018.42x = 1,123,878.25
5. Step 5: Solve for x
   x = 1,123,878.25/1,018.42
6. Step 6: Final answer
   x = 1,103.55