Finding the Fourth Proportional to 1,105.76, 1,664.66 and 955.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,105.76 : 1,664.66 = 955.10 : x
2. Step 2: Convert to fraction form
   1,105.76/1,664.66 = 955.10/x
3. Step 3: Cross multiply
   1,105.76x = 1,664.66 × 955.10
4. Step 4: Simplify right side
   1,105.76x = 1,589,923.32
5. Step 5: Solve for x
   x = 1,589,923.32/1,105.76
6. Step 6: Final answer
   x = 1,437.85