Finding the Fourth Proportional to 1,942.47, 2,680.61 and 1,058.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,942.47 : 2,680.61 = 1,058.28 : x
2. Step 2: Convert to fraction form
   1,942.47/2,680.61 = 1,058.28/x
3. Step 3: Cross multiply
   1,942.47x = 2,680.61 × 1,058.28
4. Step 4: Simplify right side
   1,942.47x = 2,836,835.95
5. Step 5: Solve for x
   x = 2,836,835.95/1,942.47
6. Step 6: Final answer
   x = 1,460.43