Finding the Fourth Proportional to 1,942.34, 2,680.47 and 1,058.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,942.34 : 2,680.47 = 1,058.18 : x
2. Step 2: Convert to fraction form
   1,942.34/2,680.47 = 1,058.18/x
3. Step 3: Cross multiply
   1,942.34x = 2,680.47 × 1,058.18
4. Step 4: Simplify right side
   1,942.34x = 2,836,406.34
5. Step 5: Solve for x
   x = 2,836,406.34/1,942.34
6. Step 6: Final answer
   x = 1,460.31