Finding the Fourth Proportional to 2,145.46, 2,962.41 and 1,647.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,145.46 : 2,962.41 = 1,647.31 : x
2. Step 2: Convert to fraction form
   2,145.46/2,962.41 = 1,647.31/x
3. Step 3: Cross multiply
   2,145.46x = 2,962.41 × 1,647.31
4. Step 4: Simplify right side
   2,145.46x = 4,880,007.62
5. Step 5: Solve for x
   x = 4,880,007.62/2,145.46
6. Step 6: Final answer
   x = 2,274.57