Finding the Fourth Proportional to 3,111.30, 4,661.28 and 2,592.09

Step by Step Solution

1. Step 1: Write the proportion equation
   3,111.30 : 4,661.28 = 2,592.09 : x
2. Step 2: Convert to fraction form
   3,111.30/4,661.28 = 2,592.09/x
3. Step 3: Cross multiply
   3,111.30x = 4,661.28 × 2,592.09
4. Step 4: Simplify right side
   3,111.30x = 12,082,457.28
5. Step 5: Solve for x
   x = 12,082,457.28/3,111.30
6. Step 6: Final answer
   x = 3,883.41