Finding the Fourth Proportional to 1,928.43, 2,660.72 and 1,142.33

Step by Step Solution

1. Step 1: Write the proportion equation
   1,928.43 : 2,660.72 = 1,142.33 : x
2. Step 2: Convert to fraction form
   1,928.43/2,660.72 = 1,142.33/x
3. Step 3: Cross multiply
   1,928.43x = 2,660.72 × 1,142.33
4. Step 4: Simplify right side
   1,928.43x = 3,039,401.26
5. Step 5: Solve for x
   x = 3,039,401.26/1,928.43
6. Step 6: Final answer
   x = 1,576.10