Finding the Fourth Proportional to 2,650.83, 3,972.81 and 1,089.07

Step by Step Solution

1. Step 1: Write the proportion equation
   2,650.83 : 3,972.81 = 1,089.07 : x
2. Step 2: Convert to fraction form
   2,650.83/3,972.81 = 1,089.07/x
3. Step 3: Cross multiply
   2,650.83x = 3,972.81 × 1,089.07
4. Step 4: Simplify right side
   2,650.83x = 4,326,662.34
5. Step 5: Solve for x
   x = 4,326,662.34/2,650.83
6. Step 6: Final answer
   x = 1,632.19