Finding the Fourth Proportional to 1,989.77, 2,747.10 and 1,282.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,989.77 : 2,747.10 = 1,282.83 : x
2. Step 2: Convert to fraction form
   1,989.77/2,747.10 = 1,282.83/x
3. Step 3: Cross multiply
   1,989.77x = 2,747.10 × 1,282.83
4. Step 4: Simplify right side
   1,989.77x = 3,524,062.29
5. Step 5: Solve for x
   x = 3,524,062.29/1,989.77
6. Step 6: Final answer
   x = 1,771.09