Finding the Fourth Proportional to 1,581.72, 2,372.34 and 608.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,581.72 : 2,372.34 = 608.28 : x
2. Step 2: Convert to fraction form
   1,581.72/2,372.34 = 608.28/x
3. Step 3: Cross multiply
   1,581.72x = 2,372.34 × 608.28
4. Step 4: Simplify right side
   1,581.72x = 1,443,046.98
5. Step 5: Solve for x
   x = 1,443,046.98/1,581.72
6. Step 6: Final answer
   x = 912.33