Finding the Fourth Proportional to 1,105.05, 1,525.28 and 633.21

Step by Step Solution

1. Step 1: Write the proportion equation
   1,105.05 : 1,525.28 = 633.21 : x
2. Step 2: Convert to fraction form
   1,105.05/1,525.28 = 633.21/x
3. Step 3: Cross multiply
   1,105.05x = 1,525.28 × 633.21
4. Step 4: Simplify right side
   1,105.05x = 965,819.38
5. Step 5: Solve for x
   x = 965,819.38/1,105.05
6. Step 6: Final answer
   x = 874.01