Finding the Fourth Proportional to 1,990.02, 2,745.98 and 1,105.76

Step by Step Solution

1. Step 1: Write the proportion equation
   1,990.02 : 2,745.98 = 1,105.76 : x
2. Step 2: Convert to fraction form
   1,990.02/2,745.98 = 1,105.76/x
3. Step 3: Cross multiply
   1,990.02x = 2,745.98 × 1,105.76
4. Step 4: Simplify right side
   1,990.02x = 3,036,394.84
5. Step 5: Solve for x
   x = 3,036,394.84/1,990.02
6. Step 6: Final answer
   x = 1,525.81