Finding the Fourth Proportional to 1,433.40, 1,979.96 and 1,105.88

Step by Step Solution

1. Step 1: Write the proportion equation
   1,433.40 : 1,979.96 = 1,105.88 : x
2. Step 2: Convert to fraction form
   1,433.40/1,979.96 = 1,105.88/x
3. Step 3: Cross multiply
   1,433.40x = 1,979.96 × 1,105.88
4. Step 4: Simplify right side
   1,433.40x = 2,189,598.16
5. Step 5: Solve for x
   x = 2,189,598.16/1,433.40
6. Step 6: Final answer
   x = 1,527.56