Finding the Fourth Proportional to 1,050.80, 1,449.72 and 608.54

Step by Step Solution

1. Step 1: Write the proportion equation
   1,050.80 : 1,449.72 = 608.54 : x
2. Step 2: Convert to fraction form
   1,050.80/1,449.72 = 608.54/x
3. Step 3: Cross multiply
   1,050.80x = 1,449.72 × 608.54
4. Step 4: Simplify right side
   1,050.80x = 882,212.61
5. Step 5: Solve for x
   x = 882,212.61/1,050.80
6. Step 6: Final answer
   x = 839.56