Finding the Fourth Proportional to 1,490.25, 2,058.18 and 1,023.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,490.25 : 2,058.18 = 1,023.69 : x
2. Step 2: Convert to fraction form
   1,490.25/2,058.18 = 1,023.69/x
3. Step 3: Cross multiply
   1,490.25x = 2,058.18 × 1,023.69
4. Step 4: Simplify right side
   1,490.25x = 2,106,938.28
5. Step 5: Solve for x
   x = 2,106,938.28/1,490.25
6. Step 6: Final answer
   x = 1,413.82