Finding the Fourth Proportional to 1,069.72, 1,476.56 and 627.62

Step by Step Solution

1. Step 1: Write the proportion equation
   1,069.72 : 1,476.56 = 627.62 : x
2. Step 2: Convert to fraction form
   1,069.72/1,476.56 = 627.62/x
3. Step 3: Cross multiply
   1,069.72x = 1,476.56 × 627.62
4. Step 4: Simplify right side
   1,069.72x = 926,712.77
5. Step 5: Solve for x
   x = 926,712.77/1,069.72
6. Step 6: Final answer
   x = 866.32