Finding the Fourth Proportional to 2,459.10, 3,695.85 and 2,142.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,459.10 : 3,695.85 = 2,142.30 : x
2. Step 2: Convert to fraction form
   2,459.10/3,695.85 = 2,142.30/x
3. Step 3: Cross multiply
   2,459.10x = 3,695.85 × 2,142.30
4. Step 4: Simplify right side
   2,459.10x = 7,917,619.46
5. Step 5: Solve for x
   x = 7,917,619.46/2,459.10
6. Step 6: Final answer
   x = 3,219.72