Finding the Fourth Proportional to 3,901.89, 5,384.71 and 2,133.63

Step by Step Solution

1. Step 1: Write the proportion equation
   3,901.89 : 5,384.71 = 2,133.63 : x
2. Step 2: Convert to fraction form
   3,901.89/5,384.71 = 2,133.63/x
3. Step 3: Cross multiply
   3,901.89x = 5,384.71 × 2,133.63
4. Step 4: Simplify right side
   3,901.89x = 11,488,978.80
5. Step 5: Solve for x
   x = 11,488,978.80/3,901.89
6. Step 6: Final answer
   x = 2,944.47