Finding the Fourth Proportional to 1,105.30, 1,525.23 and 633.09

Step by Step Solution

1. Step 1: Write the proportion equation
   1,105.30 : 1,525.23 = 633.09 : x
2. Step 2: Convert to fraction form
   1,105.30/1,525.23 = 633.09/x
3. Step 3: Cross multiply
   1,105.30x = 1,525.23 × 633.09
4. Step 4: Simplify right side
   1,105.30x = 965,607.86
5. Step 5: Solve for x
   x = 965,607.86/1,105.30
6. Step 6: Final answer
   x = 873.62