Finding the Fourth Proportional to 1,408.62, 1,942.56 and 1,058.70

Step by Step Solution

1. Step 1: Write the proportion equation
   1,408.62 : 1,942.56 = 1,058.70 : x
2. Step 2: Convert to fraction form
   1,408.62/1,942.56 = 1,058.70/x
3. Step 3: Cross multiply
   1,408.62x = 1,942.56 × 1,058.70
4. Step 4: Simplify right side
   1,408.62x = 2,056,588.27
5. Step 5: Solve for x
   x = 2,056,588.27/1,408.62
6. Step 6: Final answer
   x = 1,460.00