Finding the Fourth Proportional to 1,942.28, 2,680.28 and 1,058.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,942.28 : 2,680.28 = 1,058.10 : x
2. Step 2: Convert to fraction form
   1,942.28/2,680.28 = 1,058.10/x
3. Step 3: Cross multiply
   1,942.28x = 2,680.28 × 1,058.10
4. Step 4: Simplify right side
   1,942.28x = 2,836,004.27
5. Step 5: Solve for x
   x = 2,836,004.27/1,942.28
6. Step 6: Final answer
   x = 1,460.14