Finding the Fourth Proportional to 2,429.16, 3,643.76 and 890.16

Step by Step Solution

1. Step 1: Write the proportion equation
   2,429.16 : 3,643.76 = 890.16 : x
2. Step 2: Convert to fraction form
   2,429.16/3,643.76 = 890.16/x
3. Step 3: Cross multiply
   2,429.16x = 3,643.76 × 890.16
4. Step 4: Simplify right side
   2,429.16x = 3,243,529.40
5. Step 5: Solve for x
   x = 3,243,529.40/2,429.16
6. Step 6: Final answer
   x = 1,335.25