Finding the Fourth Proportional to 2,511.32, 3,457.88 and 2,231.06

Step by Step Solution

1. Step 1: Write the proportion equation
   2,511.32 : 3,457.88 = 2,231.06 : x
2. Step 2: Convert to fraction form
   2,511.32/3,457.88 = 2,231.06/x
3. Step 3: Cross multiply
   2,511.32x = 3,457.88 × 2,231.06
4. Step 4: Simplify right side
   2,511.32x = 7,714,709.31
5. Step 5: Solve for x
   x = 7,714,709.31/2,511.32
6. Step 6: Final answer
   x = 3,071.98