Finding the Fourth Proportional to 2,943.45, 4,415.42 and 863.37

Step by Step Solution

1. Step 1: Write the proportion equation
   2,943.45 : 4,415.42 = 863.37 : x
2. Step 2: Convert to fraction form
   2,943.45/4,415.42 = 863.37/x
3. Step 3: Cross multiply
   2,943.45x = 4,415.42 × 863.37
4. Step 4: Simplify right side
   2,943.45x = 3,812,141.17
5. Step 5: Solve for x
   x = 3,812,141.17/2,943.45
6. Step 6: Final answer
   x = 1,295.13