Finding the Fourth Proportional to 1,019.11, 1,406.41 and 626.26

Step by Step Solution

1. Step 1: Write the proportion equation
   1,019.11 : 1,406.41 = 626.26 : x
2. Step 2: Convert to fraction form
   1,019.11/1,406.41 = 626.26/x
3. Step 3: Cross multiply
   1,019.11x = 1,406.41 × 626.26
4. Step 4: Simplify right side
   1,019.11x = 880,778.33
5. Step 5: Solve for x
   x = 880,778.33/1,019.11
6. Step 6: Final answer
   x = 864.26