Finding the Fourth Proportional to 2,456.79, 3,390.86 and 1,461.87

Step by Step Solution

1. Step 1: Write the proportion equation
   2,456.79 : 3,390.86 = 1,461.87 : x
2. Step 2: Convert to fraction form
   2,456.79/3,390.86 = 1,461.87/x
3. Step 3: Cross multiply
   2,456.79x = 3,390.86 × 1,461.87
4. Step 4: Simplify right side
   2,456.79x = 4,956,989.20
5. Step 5: Solve for x
   x = 4,956,989.20/2,456.79
6. Step 6: Final answer
   x = 2,017.67