Finding the Fourth Proportional to 2,837.49, 4,256.47 and 863.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,837.49 : 4,256.47 = 863.30 : x
2. Step 2: Convert to fraction form
   2,837.49/4,256.47 = 863.30/x
3. Step 3: Cross multiply
   2,837.49x = 4,256.47 × 863.30
4. Step 4: Simplify right side
   2,837.49x = 3,674,594.77
5. Step 5: Solve for x
   x = 3,674,594.77/2,837.49
6. Step 6: Final answer
   x = 1,295.01