Finding the Fourth Proportional to 1,105.89, 1,667.06 and 953.07

Step by Step Solution

1. Step 1: Write the proportion equation
   1,105.89 : 1,667.06 = 953.07 : x
2. Step 2: Convert to fraction form
   1,105.89/1,667.06 = 953.07/x
3. Step 3: Cross multiply
   1,105.89x = 1,667.06 × 953.07
4. Step 4: Simplify right side
   1,105.89x = 1,588,820.11
5. Step 5: Solve for x
   x = 1,588,820.11/1,105.89
6. Step 6: Final answer
   x = 1,436.69