Finding the Fourth Proportional to 1,628.96, 2,443.12 and 474.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,628.96 : 2,443.12 = 474.72 : x
2. Step 2: Convert to fraction form
   1,628.96/2,443.12 = 474.72/x
3. Step 3: Cross multiply
   1,628.96x = 2,443.12 × 474.72
4. Step 4: Simplify right side
   1,628.96x = 1,159,797.93
5. Step 5: Solve for x
   x = 1,159,797.93/1,628.96
6. Step 6: Final answer
   x = 711.99