Finding the Fourth Proportional to 1,076.82, 1,485.99 and 634.71

Step by Step Solution

1. Step 1: Write the proportion equation
   1,076.82 : 1,485.99 = 634.71 : x
2. Step 2: Convert to fraction form
   1,076.82/1,485.99 = 634.71/x
3. Step 3: Cross multiply
   1,076.82x = 1,485.99 × 634.71
4. Step 4: Simplify right side
   1,076.82x = 943,172.71
5. Step 5: Solve for x
   x = 943,172.71/1,076.82
6. Step 6: Final answer
   x = 875.89