Finding the Fourth Proportional to 1,105.31, 1,525.37 and 633.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,105.31 : 1,525.37 = 633.28 : x
2. Step 2: Convert to fraction form
   1,105.31/1,525.37 = 633.28/x
3. Step 3: Cross multiply
   1,105.31x = 1,525.37 × 633.28
4. Step 4: Simplify right side
   1,105.31x = 965,986.31
5. Step 5: Solve for x
   x = 965,986.31/1,105.31
6. Step 6: Final answer
   x = 873.95