Finding the Fourth Proportional to 1,144.08, 1,577.82 and 1,011.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,144.08 : 1,577.82 = 1,011.42 : x
2. Step 2: Convert to fraction form
   1,144.08/1,577.82 = 1,011.42/x
3. Step 3: Cross multiply
   1,144.08x = 1,577.82 × 1,011.42
4. Step 4: Simplify right side
   1,144.08x = 1,595,838.70
5. Step 5: Solve for x
   x = 1,595,838.70/1,144.08
6. Step 6: Final answer
   x = 1,394.87