Finding the Fourth Proportional to 2,036.27, 2,808.98 and 1,288.91

Step by Step Solution

1. Step 1: Write the proportion equation
   2,036.27 : 2,808.98 = 1,288.91 : x
2. Step 2: Convert to fraction form
   2,036.27/2,808.98 = 1,288.91/x
3. Step 3: Cross multiply
   2,036.27x = 2,808.98 × 1,288.91
4. Step 4: Simplify right side
   2,036.27x = 3,620,527.82
5. Step 5: Solve for x
   x = 3,620,527.82/2,036.27
6. Step 6: Final answer
   x = 1,778.02