Finding the Fourth Proportional to 1,076.48, 1,485.59 and 634.32

Step by Step Solution

1. Step 1: Write the proportion equation
   1,076.48 : 1,485.59 = 634.32 : x
2. Step 2: Convert to fraction form
   1,076.48/1,485.59 = 634.32/x
3. Step 3: Cross multiply
   1,076.48x = 1,485.59 × 634.32
4. Step 4: Simplify right side
   1,076.48x = 942,336.28
5. Step 5: Solve for x
   x = 942,336.28/1,076.48
6. Step 6: Final answer
   x = 875.39