Finding the Fourth Proportional to 2,838.04, 4,256.79 and 890.17

Step by Step Solution

1. Step 1: Write the proportion equation
   2,838.04 : 4,256.79 = 890.17 : x
2. Step 2: Convert to fraction form
   2,838.04/4,256.79 = 890.17/x
3. Step 3: Cross multiply
   2,838.04x = 4,256.79 × 890.17
4. Step 4: Simplify right side
   2,838.04x = 3,789,266.75
5. Step 5: Solve for x
   x = 3,789,266.75/2,838.04
6. Step 6: Final answer
   x = 1,335.17