Finding the Fourth Proportional to 2,058.92, 2,840.59 and 1,429.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,058.92 : 2,840.59 = 1,429.28 : x
2. Step 2: Convert to fraction form
   2,058.92/2,840.59 = 1,429.28/x
3. Step 3: Cross multiply
   2,058.92x = 2,840.59 × 1,429.28
4. Step 4: Simplify right side
   2,058.92x = 4,060,009.15
5. Step 5: Solve for x
   x = 4,060,009.15/2,058.92
6. Step 6: Final answer
   x = 1,971.91