Finding the Fourth Proportional to 1,648.55, 2,473.89 and 608.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,648.55 : 2,473.89 = 608.56 : x
2. Step 2: Convert to fraction form
   1,648.55/2,473.89 = 608.56/x
3. Step 3: Cross multiply
   1,648.55x = 2,473.89 × 608.56
4. Step 4: Simplify right side
   1,648.55x = 1,505,519.37
5. Step 5: Solve for x
   x = 1,505,519.37/1,648.55
6. Step 6: Final answer
   x = 913.24