Finding the Fourth Proportional to 1,490.86, 2,058.41 and 902.43

Step by Step Solution

1. Step 1: Write the proportion equation
   1,490.86 : 2,058.41 = 902.43 : x
2. Step 2: Convert to fraction form
   1,490.86/2,058.41 = 902.43/x
3. Step 3: Cross multiply
   1,490.86x = 2,058.41 × 902.43
4. Step 4: Simplify right side
   1,490.86x = 1,857,570.94
5. Step 5: Solve for x
   x = 1,857,570.94/1,490.86
6. Step 6: Final answer
   x = 1,245.97