Finding the Fourth Proportional to 1,105.56, 1,525.96 and 633.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,105.56 : 1,525.96 = 633.72 : x
2. Step 2: Convert to fraction form
   1,105.56/1,525.96 = 633.72/x
3. Step 3: Cross multiply
   1,105.56x = 1,525.96 × 633.72
4. Step 4: Simplify right side
   1,105.56x = 967,031.37
5. Step 5: Solve for x
   x = 967,031.37/1,105.56
6. Step 6: Final answer
   x = 874.70