Finding the Fourth Proportional to 2,016.74, 2,782.60 and 1,230.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,016.74 : 2,782.60 = 1,230.50 : x
2. Step 2: Convert to fraction form
   2,016.74/2,782.60 = 1,230.50/x
3. Step 3: Cross multiply
   2,016.74x = 2,782.60 × 1,230.50
4. Step 4: Simplify right side
   2,016.74x = 3,423,972.31
5. Step 5: Solve for x
   x = 3,423,972.31/2,016.74
6. Step 6: Final answer
   x = 1,697.78