Finding the Fourth Proportional to 1,071.41, 1,478.56 and 629.33

Step by Step Solution

1. Step 1: Write the proportion equation
   1,071.41 : 1,478.56 = 629.33 : x
2. Step 2: Convert to fraction form
   1,071.41/1,478.56 = 629.33/x
3. Step 3: Cross multiply
   1,071.41x = 1,478.56 × 629.33
4. Step 4: Simplify right side
   1,071.41x = 930,502.16
5. Step 5: Solve for x
   x = 930,502.16/1,071.41
6. Step 6: Final answer
   x = 868.48