Finding the Fourth Proportional to 1,069.83, 1,476.49 and 627.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,069.83 : 1,476.49 = 627.72 : x
2. Step 2: Convert to fraction form
   1,069.83/1,476.49 = 627.72/x
3. Step 3: Cross multiply
   1,069.83x = 1,476.49 × 627.72
4. Step 4: Simplify right side
   1,069.83x = 926,822.30
5. Step 5: Solve for x
   x = 926,822.30/1,069.83
6. Step 6: Final answer
   x = 866.33