Finding the Fourth Proportional to 1,930.05, 2,663.28 and 1,143.99

Step by Step Solution

1. Step 1: Write the proportion equation
   1,930.05 : 2,663.28 = 1,143.99 : x
2. Step 2: Convert to fraction form
   1,930.05/2,663.28 = 1,143.99/x
3. Step 3: Cross multiply
   1,930.05x = 2,663.28 × 1,143.99
4. Step 4: Simplify right side
   1,930.05x = 3,046,765.69
5. Step 5: Solve for x
   x = 3,046,765.69/1,930.05
6. Step 6: Final answer
   x = 1,578.59