Finding the Fourth Proportional to 1,930.71, 2,663.55 and 1,144.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,930.71 : 2,663.55 = 1,144.34 : x
2. Step 2: Convert to fraction form
   1,930.71/2,663.55 = 1,144.34/x
3. Step 3: Cross multiply
   1,930.71x = 2,663.55 × 1,144.34
4. Step 4: Simplify right side
   1,930.71x = 3,047,993.49
5. Step 5: Solve for x
   x = 3,047,993.49/1,930.71
6. Step 6: Final answer
   x = 1,578.69