Finding the Fourth Proportional to 1,069.62, 1,476.05 and 627.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,069.62 : 1,476.05 = 627.50 : x
2. Step 2: Convert to fraction form
   1,069.62/1,476.05 = 627.50/x
3. Step 3: Cross multiply
   1,069.62x = 1,476.05 × 627.50
4. Step 4: Simplify right side
   1,069.62x = 926,210.86
5. Step 5: Solve for x
   x = 926,210.86/1,069.62
6. Step 6: Final answer
   x = 865.93