Finding the Fourth Proportional to 1,648.12, 2,274.56 and 1,058.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,648.12 : 2,274.56 = 1,058.83 : x
2. Step 2: Convert to fraction form
   1,648.12/2,274.56 = 1,058.83/x
3. Step 3: Cross multiply
   1,648.12x = 2,274.56 × 1,058.83
4. Step 4: Simplify right side
   1,648.12x = 2,408,372.36
5. Step 5: Solve for x
   x = 2,408,372.36/1,648.12
6. Step 6: Final answer
   x = 1,461.28