Finding the Fourth Proportional to 1,339.12, 1,844.88 and 1,105.84

Step by Step Solution

1. Step 1: Write the proportion equation
   1,339.12 : 1,844.88 = 1,105.84 : x
2. Step 2: Convert to fraction form
   1,339.12/1,844.88 = 1,105.84/x
3. Step 3: Cross multiply
   1,339.12x = 1,844.88 × 1,105.84
4. Step 4: Simplify right side
   1,339.12x = 2,040,142.10
5. Step 5: Solve for x
   x = 2,040,142.10/1,339.12
6. Step 6: Final answer
   x = 1,523.49