Finding the Fourth Proportional to 2,389.90, 3,582.88 and 908.82

Step by Step Solution

1. Step 1: Write the proportion equation
   2,389.90 : 3,582.88 = 908.82 : x
2. Step 2: Convert to fraction form
   2,389.90/3,582.88 = 908.82/x
3. Step 3: Cross multiply
   2,389.90x = 3,582.88 × 908.82
4. Step 4: Simplify right side
   2,389.90x = 3,256,193.00
5. Step 5: Solve for x
   x = 3,256,193.00/2,389.90
6. Step 6: Final answer
   x = 1,362.48