Finding the Fourth Proportional to 3,901.05, 5,385.87 and 2,411.01

Step by Step Solution

1. Step 1: Write the proportion equation
   3,901.05 : 5,385.87 = 2,411.01 : x
2. Step 2: Convert to fraction form
   3,901.05/5,385.87 = 2,411.01/x
3. Step 3: Cross multiply
   3,901.05x = 5,385.87 × 2,411.01
4. Step 4: Simplify right side
   3,901.05x = 12,985,386.43
5. Step 5: Solve for x
   x = 12,985,386.43/3,901.05
6. Step 6: Final answer
   x = 3,328.69