Finding the Fourth Proportional to 1,076.33, 1,485.39 and 634.37

Step by Step Solution

1. Step 1: Write the proportion equation
   1,076.33 : 1,485.39 = 634.37 : x
2. Step 2: Convert to fraction form
   1,076.33/1,485.39 = 634.37/x
3. Step 3: Cross multiply
   1,076.33x = 1,485.39 × 634.37
4. Step 4: Simplify right side
   1,076.33x = 942,286.85
5. Step 5: Solve for x
   x = 942,286.85/1,076.33
6. Step 6: Final answer
   x = 875.46