Finding the Fourth Proportional to 1,989.83, 2,745.83 and 1,105.60

Step by Step Solution

1. Step 1: Write the proportion equation
   1,989.83 : 2,745.83 = 1,105.60 : x
2. Step 2: Convert to fraction form
   1,989.83/2,745.83 = 1,105.60/x
3. Step 3: Cross multiply
   1,989.83x = 2,745.83 × 1,105.60
4. Step 4: Simplify right side
   1,989.83x = 3,035,770.39
5. Step 5: Solve for x
   x = 3,035,770.39/1,989.83
6. Step 6: Final answer
   x = 1,525.64