Finding the Fourth Proportional to 1,050.72, 1,449.91 and 608.54

Step by Step Solution

1. Step 1: Write the proportion equation
   1,050.72 : 1,449.91 = 608.54 : x
2. Step 2: Convert to fraction form
   1,050.72/1,449.91 = 608.54/x
3. Step 3: Cross multiply
   1,050.72x = 1,449.91 × 608.54
4. Step 4: Simplify right side
   1,050.72x = 882,328.23
5. Step 5: Solve for x
   x = 882,328.23/1,050.72
6. Step 6: Final answer
   x = 839.74