Finding the Fourth Proportional to 2,058.57, 2,840.81 and 1,219.82

Step by Step Solution

1. Step 1: Write the proportion equation
   2,058.57 : 2,840.81 = 1,219.82 : x
2. Step 2: Convert to fraction form
   2,058.57/2,840.81 = 1,219.82/x
3. Step 3: Cross multiply
   2,058.57x = 2,840.81 × 1,219.82
4. Step 4: Simplify right side
   2,058.57x = 3,465,256.55
5. Step 5: Solve for x
   x = 3,465,256.55/2,058.57
6. Step 6: Final answer
   x = 1,683.33