Finding the Fourth Proportional to 1,109.01, 1,662.91 and 459.39

Step by Step Solution

1. Step 1: Write the proportion equation
   1,109.01 : 1,662.91 = 459.39 : x
2. Step 2: Convert to fraction form
   1,109.01/1,662.91 = 459.39/x
3. Step 3: Cross multiply
   1,109.01x = 1,662.91 × 459.39
4. Step 4: Simplify right side
   1,109.01x = 763,924.22
5. Step 5: Solve for x
   x = 763,924.22/1,109.01
6. Step 6: Final answer
   x = 688.83