Finding the Fourth Proportional to 2,650.32, 3,974.86 and 1,089.92

Step by Step Solution

1. Step 1: Write the proportion equation
   2,650.32 : 3,974.86 = 1,089.92 : x
2. Step 2: Convert to fraction form
   2,650.32/3,974.86 = 1,089.92/x
3. Step 3: Cross multiply
   2,650.32x = 3,974.86 × 1,089.92
4. Step 4: Simplify right side
   2,650.32x = 4,332,279.41
5. Step 5: Solve for x
   x = 4,332,279.41/2,650.32
6. Step 6: Final answer
   x = 1,634.63