Finding the Fourth Proportional to 1,086.98, 1,629.22 and 470.07

Step by Step Solution

1. Step 1: Write the proportion equation
   1,086.98 : 1,629.22 = 470.07 : x
2. Step 2: Convert to fraction form
   1,086.98/1,629.22 = 470.07/x
3. Step 3: Cross multiply
   1,086.98x = 1,629.22 × 470.07
4. Step 4: Simplify right side
   1,086.98x = 765,847.45
5. Step 5: Solve for x
   x = 765,847.45/1,086.98
6. Step 6: Final answer
   x = 704.56