Finding the Fourth Proportional to 1,069.12, 1,474.69 and 626.71

Step by Step Solution

1. Step 1: Write the proportion equation
   1,069.12 : 1,474.69 = 626.71 : x
2. Step 2: Convert to fraction form
   1,069.12/1,474.69 = 626.71/x
3. Step 3: Cross multiply
   1,069.12x = 1,474.69 × 626.71
4. Step 4: Simplify right side
   1,069.12x = 924,200.07
5. Step 5: Solve for x
   x = 924,200.07/1,069.12
6. Step 6: Final answer
   x = 864.45