Finding the Fourth Proportional to 1,076.15, 1,484.89 and 633.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,076.15 : 1,484.89 = 633.98 : x
2. Step 2: Convert to fraction form
   1,076.15/1,484.89 = 633.98/x
3. Step 3: Cross multiply
   1,076.15x = 1,484.89 × 633.98
4. Step 4: Simplify right side
   1,076.15x = 941,392.69
5. Step 5: Solve for x
   x = 941,392.69/1,076.15
6. Step 6: Final answer
   x = 874.78