Finding the Fourth Proportional to 1,086.28, 1,628.52 and 469.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,086.28 : 1,628.52 = 469.48 : x
2. Step 2: Convert to fraction form
   1,086.28/1,628.52 = 469.48/x
3. Step 3: Cross multiply
   1,086.28x = 1,628.52 × 469.48
4. Step 4: Simplify right side
   1,086.28x = 764,557.57
5. Step 5: Solve for x
   x = 764,557.57/1,086.28
6. Step 6: Final answer
   x = 703.83