Finding the Fourth Proportional to 1,105.81, 1,526.09 and 657.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,105.81 : 1,526.09 = 657.56 : x
2. Step 2: Convert to fraction form
   1,105.81/1,526.09 = 657.56/x
3. Step 3: Cross multiply
   1,105.81x = 1,526.09 × 657.56
4. Step 4: Simplify right side
   1,105.81x = 1,003,484.82
5. Step 5: Solve for x
   x = 1,003,484.82/1,105.81
6. Step 6: Final answer
   x = 907.47