Finding the Fourth Proportional to 1,930.39, 2,664.18 and 1,144.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,930.39 : 2,664.18 = 1,144.30 : x
2. Step 2: Convert to fraction form
   1,930.39/2,664.18 = 1,144.30/x
3. Step 3: Cross multiply
   1,930.39x = 2,664.18 × 1,144.30
4. Step 4: Simplify right side
   1,930.39x = 3,048,621.17
5. Step 5: Solve for x
   x = 3,048,621.17/1,930.39
6. Step 6: Final answer
   x = 1,579.28