Finding the Fourth Proportional to 1,050.91, 1,449.77 and 608.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,050.91 : 1,449.77 = 608.69 : x
2. Step 2: Convert to fraction form
   1,050.91/1,449.77 = 608.69/x
3. Step 3: Cross multiply
   1,050.91x = 1,449.77 × 608.69
4. Step 4: Simplify right side
   1,050.91x = 882,461.08
5. Step 5: Solve for x
   x = 882,461.08/1,050.91
6. Step 6: Final answer
   x = 839.71