Finding the Fourth Proportional to 1,646.72, 2,470.56 and 492.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,646.72 : 2,470.56 = 492.56 : x
2. Step 2: Convert to fraction form
   1,646.72/2,470.56 = 492.56/x
3. Step 3: Cross multiply
   1,646.72x = 2,470.56 × 492.56
4. Step 4: Simplify right side
   1,646.72x = 1,216,899.03
5. Step 5: Solve for x
   x = 1,216,899.03/1,646.72
6. Step 6: Final answer
   x = 738.98