Finding the Fourth Proportional to 1,144.09, 1,579.00 and 830.38

Step by Step Solution

1. Step 1: Write the proportion equation
   1,144.09 : 1,579.00 = 830.38 : x
2. Step 2: Convert to fraction form
   1,144.09/1,579.00 = 830.38/x
3. Step 3: Cross multiply
   1,144.09x = 1,579.00 × 830.38
4. Step 4: Simplify right side
   1,144.09x = 1,311,171.89
5. Step 5: Solve for x
   x = 1,311,171.89/1,144.09
6. Step 6: Final answer
   x = 1,146.04