Finding the Fourth Proportional to 2,428.86, 3,640.46 and 968.43

Step by Step Solution

1. Step 1: Write the proportion equation
   2,428.86 : 3,640.46 = 968.43 : x
2. Step 2: Convert to fraction form
   2,428.86/3,640.46 = 968.43/x
3. Step 3: Cross multiply
   2,428.86x = 3,640.46 × 968.43
4. Step 4: Simplify right side
   2,428.86x = 3,525,525.84
5. Step 5: Solve for x
   x = 3,525,525.84/2,428.86
6. Step 6: Final answer
   x = 1,451.51