Finding the Fourth Proportional to 2,016.37, 2,780.02 and 1,306.99

Step by Step Solution

1. Step 1: Write the proportion equation
   2,016.37 : 2,780.02 = 1,306.99 : x
2. Step 2: Convert to fraction form
   2,016.37/2,780.02 = 1,306.99/x
3. Step 3: Cross multiply
   2,016.37x = 2,780.02 × 1,306.99
4. Step 4: Simplify right side
   2,016.37x = 3,633,458.34
5. Step 5: Solve for x
   x = 3,633,458.34/2,016.37
6. Step 6: Final answer
   x = 1,801.98