Finding the Fourth Proportional to 3,900.89, 5,383.33 and 2,132.63

Step by Step Solution

1. Step 1: Write the proportion equation
   3,900.89 : 5,383.33 = 2,132.63 : x
2. Step 2: Convert to fraction form
   3,900.89/5,383.33 = 2,132.63/x
3. Step 3: Cross multiply
   3,900.89x = 5,383.33 × 2,132.63
4. Step 4: Simplify right side
   3,900.89x = 11,480,639.00
5. Step 5: Solve for x
   x = 11,480,639.00/3,900.89
6. Step 6: Final answer
   x = 2,943.08