Finding the Fourth Proportional to 2,865.29, 4,298.61 and 890.82

Step by Step Solution

1. Step 1: Write the proportion equation
   2,865.29 : 4,298.61 = 890.82 : x
2. Step 2: Convert to fraction form
   2,865.29/4,298.61 = 890.82/x
3. Step 3: Cross multiply
   2,865.29x = 4,298.61 × 890.82
4. Step 4: Simplify right side
   2,865.29x = 3,829,261.81
5. Step 5: Solve for x
   x = 3,829,261.81/2,865.29
6. Step 6: Final answer
   x = 1,336.43