Finding the Fourth Proportional to 842.59, 1,162.72 and 469.59

Step by Step Solution

1. Step 1: Write the proportion equation
   842.59 : 1,162.72 = 469.59 : x
2. Step 2: Convert to fraction form
   842.59/1,162.72 = 469.59/x
3. Step 3: Cross multiply
   842.59x = 1,162.72 × 469.59
4. Step 4: Simplify right side
   842.59x = 545,993.52
5. Step 5: Solve for x
   x = 545,993.52/842.59
6. Step 6: Final answer
   x = 647.99