Finding the Fourth Proportional to 1,050.78, 1,449.72 and 608.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,050.78 : 1,449.72 = 608.52 : x
2. Step 2: Convert to fraction form
   1,050.78/1,449.72 = 608.52/x
3. Step 3: Cross multiply
   1,050.78x = 1,449.72 × 608.52
4. Step 4: Simplify right side
   1,050.78x = 882,183.61
5. Step 5: Solve for x
   x = 882,183.61/1,050.78
6. Step 6: Final answer
   x = 839.55