Finding the Fourth Proportional to 1,086.27, 1,629.71 and 437.46

Step by Step Solution

1. Step 1: Write the proportion equation
   1,086.27 : 1,629.71 = 437.46 : x
2. Step 2: Convert to fraction form
   1,086.27/1,629.71 = 437.46/x
3. Step 3: Cross multiply
   1,086.27x = 1,629.71 × 437.46
4. Step 4: Simplify right side
   1,086.27x = 712,932.94
5. Step 5: Solve for x
   x = 712,932.94/1,086.27
6. Step 6: Final answer
   x = 656.31