Finding the Fourth Proportional to 1,942.66, 2,680.78 and 1,058.46

Step by Step Solution

1. Step 1: Write the proportion equation
   1,942.66 : 2,680.78 = 1,058.46 : x
2. Step 2: Convert to fraction form
   1,942.66/2,680.78 = 1,058.46/x
3. Step 3: Cross multiply
   1,942.66x = 2,680.78 × 1,058.46
4. Step 4: Simplify right side
   1,942.66x = 2,837,498.40
5. Step 5: Solve for x
   x = 2,837,498.40/1,942.66
6. Step 6: Final answer
   x = 1,460.63