Finding the Fourth Proportional to 2,186.31, 3,281.90 and 2,152.29

Step by Step Solution

1. Step 1: Write the proportion equation
   2,186.31 : 3,281.90 = 2,152.29 : x
2. Step 2: Convert to fraction form
   2,186.31/3,281.90 = 2,152.29/x
3. Step 3: Cross multiply
   2,186.31x = 3,281.90 × 2,152.29
4. Step 4: Simplify right side
   2,186.31x = 7,063,589.79
5. Step 5: Solve for x
   x = 7,063,589.79/2,186.31
6. Step 6: Final answer
   x = 3,230.83