Finding the Fourth Proportional to 1,930.37, 2,663.90 and 1,144.79

Step by Step Solution

1. Step 1: Write the proportion equation
   1,930.37 : 2,663.90 = 1,144.79 : x
2. Step 2: Convert to fraction form
   1,930.37/2,663.90 = 1,144.79/x
3. Step 3: Cross multiply
   1,930.37x = 2,663.90 × 1,144.79
4. Step 4: Simplify right side
   1,930.37x = 3,049,600.36
5. Step 5: Solve for x
   x = 3,049,600.36/1,930.37
6. Step 6: Final answer
   x = 1,579.80