Finding the Fourth Proportional to 1,942.42, 2,680.57 and 1,058.23

Step by Step Solution

1. Step 1: Write the proportion equation
   1,942.42 : 2,680.57 = 1,058.23 : x
2. Step 2: Convert to fraction form
   1,942.42/2,680.57 = 1,058.23/x
3. Step 3: Cross multiply
   1,942.42x = 2,680.57 × 1,058.23
4. Step 4: Simplify right side
   1,942.42x = 2,836,659.59
5. Step 5: Solve for x
   x = 2,836,659.59/1,942.42
6. Step 6: Final answer
   x = 1,460.37