Finding the Fourth Proportional to 4,915, 7,373.72 and 1,628.43

Step by Step Solution

1. Step 1: Write the proportion equation
   4,915 : 7,373.72 = 1,628.43 : x
2. Step 2: Convert to fraction form
   4,915/7,373.72 = 1,628.43/x
3. Step 3: Cross multiply
   4,915x = 7,373.72 × 1,628.43
4. Step 4: Simplify right side
   4,915x = 12,007,586.86
5. Step 5: Solve for x
   x = 12,007,586.86/4,915
6. Step 6: Final answer
   x = 2,443.05