Finding the Fourth Proportional to 1,104.72, 1,652.94 and 666.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,104.72 : 1,652.94 = 666.15 : x
2. Step 2: Convert to fraction form
   1,104.72/1,652.94 = 666.15/x
3. Step 3: Cross multiply
   1,104.72x = 1,652.94 × 666.15
4. Step 4: Simplify right side
   1,104.72x = 1,101,105.98
5. Step 5: Solve for x
   x = 1,101,105.98/1,104.72
6. Step 6: Final answer
   x = 996.73