Finding the Fourth Proportional to 2,058.34, 3,087.60 and 1,912.54

Step by Step Solution

1. Step 1: Write the proportion equation
   2,058.34 : 3,087.60 = 1,912.54 : x
2. Step 2: Convert to fraction form
   2,058.34/3,087.60 = 1,912.54/x
3. Step 3: Cross multiply
   2,058.34x = 3,087.60 × 1,912.54
4. Step 4: Simplify right side
   2,058.34x = 5,905,158.50
5. Step 5: Solve for x
   x = 5,905,158.50/2,058.34
6. Step 6: Final answer
   x = 2,868.89