Finding the Fourth Proportional to 3,061.31, 4,218.09 and 2,064.86

Step by Step Solution

1. Step 1: Write the proportion equation
   3,061.31 : 4,218.09 = 2,064.86 : x
2. Step 2: Convert to fraction form
   3,061.31/4,218.09 = 2,064.86/x
3. Step 3: Cross multiply
   3,061.31x = 4,218.09 × 2,064.86
4. Step 4: Simplify right side
   3,061.31x = 8,709,765.32
5. Step 5: Solve for x
   x = 8,709,765.32/3,061.31
6. Step 6: Final answer
   x = 2,845.11