Finding the Fourth Proportional to 2,058.50, 2,840.36 and 1,174.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,058.50 : 2,840.36 = 1,174.30 : x
2. Step 2: Convert to fraction form
   2,058.50/2,840.36 = 1,174.30/x
3. Step 3: Cross multiply
   2,058.50x = 2,840.36 × 1,174.30
4. Step 4: Simplify right side
   2,058.50x = 3,335,421.78
5. Step 5: Solve for x
   x = 3,335,421.78/2,058.50
6. Step 6: Final answer
   x = 1,620.31