Finding the Fourth Proportional to 2,679.63, 4,016.61 and 1,292.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,679.63 : 4,016.61 = 1,292.10 : x
2. Step 2: Convert to fraction form
   2,679.63/4,016.61 = 1,292.10/x
3. Step 3: Cross multiply
   2,679.63x = 4,016.61 × 1,292.10
4. Step 4: Simplify right side
   2,679.63x = 5,189,861.78
5. Step 5: Solve for x
   x = 5,189,861.78/2,679.63
6. Step 6: Final answer
   x = 1,936.78