Finding the Fourth Proportional to 1,989.96, 2,746.10 and 1,105.76

Step by Step Solution

1. Step 1: Write the proportion equation
   1,989.96 : 2,746.10 = 1,105.76 : x
2. Step 2: Convert to fraction form
   1,989.96/2,746.10 = 1,105.76/x
3. Step 3: Cross multiply
   1,989.96x = 2,746.10 × 1,105.76
4. Step 4: Simplify right side
   1,989.96x = 3,036,527.54
5. Step 5: Solve for x
   x = 3,036,527.54/1,989.96
6. Step 6: Final answer
   x = 1,525.92