Finding the Fourth Proportional to 2,016.10, 2,782.51 and 1,230.60

Step by Step Solution

1. Step 1: Write the proportion equation
   2,016.10 : 2,782.51 = 1,230.60 : x
2. Step 2: Convert to fraction form
   2,016.10/2,782.51 = 1,230.60/x
3. Step 3: Cross multiply
   2,016.10x = 2,782.51 × 1,230.60
4. Step 4: Simplify right side
   2,016.10x = 3,424,152.93
5. Step 5: Solve for x
   x = 3,424,152.93/2,016.10
6. Step 6: Final answer
   x = 1,698.41