Finding the Fourth Proportional to 3,914.69, 5,402.25 and 2,146.31

Step by Step Solution

1. Step 1: Write the proportion equation
   3,914.69 : 5,402.25 = 2,146.31 : x
2. Step 2: Convert to fraction form
   3,914.69/5,402.25 = 2,146.31/x
3. Step 3: Cross multiply
   3,914.69x = 5,402.25 × 2,146.31
4. Step 4: Simplify right side
   3,914.69x = 11,594,903.20
5. Step 5: Solve for x
   x = 11,594,903.20/3,914.69
6. Step 6: Final answer
   x = 2,961.90