Finding the Fourth Proportional to 1,069.06, 1,475.40 and 627.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,069.06 : 1,475.40 = 627.10 : x
2. Step 2: Convert to fraction form
   1,069.06/1,475.40 = 627.10/x
3. Step 3: Cross multiply
   1,069.06x = 1,475.40 × 627.10
4. Step 4: Simplify right side
   1,069.06x = 925,223.34
5. Step 5: Solve for x
   x = 925,223.34/1,069.06
6. Step 6: Final answer
   x = 865.46