Finding the Fourth Proportional to 2,306.21, 3,460.32 and 1,210.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,306.21 : 3,460.32 = 1,210.31 : x
2. Step 2: Convert to fraction form
   2,306.21/3,460.32 = 1,210.31/x
3. Step 3: Cross multiply
   2,306.21x = 3,460.32 × 1,210.31
4. Step 4: Simplify right side
   2,306.21x = 4,188,059.90
5. Step 5: Solve for x
   x = 4,188,059.90/2,306.21
6. Step 6: Final answer
   x = 1,815.99