Finding the Fourth Proportional to 1,071.37, 1,478.51 and 629.29

Step by Step Solution

1. Step 1: Write the proportion equation
   1,071.37 : 1,478.51 = 629.29 : x
2. Step 2: Convert to fraction form
   1,071.37/1,478.51 = 629.29/x
3. Step 3: Cross multiply
   1,071.37x = 1,478.51 × 629.29
4. Step 4: Simplify right side
   1,071.37x = 930,411.56
5. Step 5: Solve for x
   x = 930,411.56/1,071.37
6. Step 6: Final answer
   x = 868.43