Finding the Fourth Proportional to 2,648.50, 3,969.41 and 2,318.63

Step by Step Solution

1. Step 1: Write the proportion equation
   2,648.50 : 3,969.41 = 2,318.63 : x
2. Step 2: Convert to fraction form
   2,648.50/3,969.41 = 2,318.63/x
3. Step 3: Cross multiply
   2,648.50x = 3,969.41 × 2,318.63
4. Step 4: Simplify right side
   2,648.50x = 9,203,561.67
5. Step 5: Solve for x
   x = 9,203,561.67/2,648.50
6. Step 6: Final answer
   x = 3,475.01