Finding the Fourth Proportional to 1,105.02, 1,655.10 and 909.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,105.02 : 1,655.10 = 909.56 : x
2. Step 2: Convert to fraction form
   1,105.02/1,655.10 = 909.56/x
3. Step 3: Cross multiply
   1,105.02x = 1,655.10 × 909.56
4. Step 4: Simplify right side
   1,105.02x = 1,505,404.48
5. Step 5: Solve for x
   x = 1,505,404.48/1,105.02
6. Step 6: Final answer
   x = 1,362.33