Finding the Fourth Proportional to 1,105.42, 1,525.45 and 657.22

Step by Step Solution

1. Step 1: Write the proportion equation
   1,105.42 : 1,525.45 = 657.22 : x
2. Step 2: Convert to fraction form
   1,105.42/1,525.45 = 657.22/x
3. Step 3: Cross multiply
   1,105.42x = 1,525.45 × 657.22
4. Step 4: Simplify right side
   1,105.42x = 1,002,546.98
5. Step 5: Solve for x
   x = 1,002,546.98/1,105.42
6. Step 6: Final answer
   x = 906.94