Finding the Fourth Proportional to 1,984.47, 2,738.60 and 1,100.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,984.47 : 2,738.60 = 1,100.31 : x
2. Step 2: Convert to fraction form
   1,984.47/2,738.60 = 1,100.31/x
3. Step 3: Cross multiply
   1,984.47x = 2,738.60 × 1,100.31
4. Step 4: Simplify right side
   1,984.47x = 3,013,308.97
5. Step 5: Solve for x
   x = 3,013,308.97/1,984.47
6. Step 6: Final answer
   x = 1,518.45