Finding the Fourth Proportional to 1,069.91, 1,476.33 and 627.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,069.91 : 1,476.33 = 627.72 : x
2. Step 2: Convert to fraction form
   1,069.91/1,476.33 = 627.72/x
3. Step 3: Cross multiply
   1,069.91x = 1,476.33 × 627.72
4. Step 4: Simplify right side
   1,069.91x = 926,721.87
5. Step 5: Solve for x
   x = 926,721.87/1,069.91
6. Step 6: Final answer
   x = 866.17