Finding the Fourth Proportional to 1,928.32, 2,661.06 and 1,142.38

Step by Step Solution

1. Step 1: Write the proportion equation
   1,928.32 : 2,661.06 = 1,142.38 : x
2. Step 2: Convert to fraction form
   1,928.32/2,661.06 = 1,142.38/x
3. Step 3: Cross multiply
   1,928.32x = 2,661.06 × 1,142.38
4. Step 4: Simplify right side
   1,928.32x = 3,039,941.72
5. Step 5: Solve for x
   x = 3,039,941.72/1,928.32
6. Step 6: Final answer
   x = 1,576.47