Finding the Fourth Proportional to 1,296.98, 1,788.42 and 1,016.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,296.98 : 1,788.42 = 1,016.72 : x
2. Step 2: Convert to fraction form
   1,296.98/1,788.42 = 1,016.72/x
3. Step 3: Cross multiply
   1,296.98x = 1,788.42 × 1,016.72
4. Step 4: Simplify right side
   1,296.98x = 1,818,322.38
5. Step 5: Solve for x
   x = 1,818,322.38/1,296.98
6. Step 6: Final answer
   x = 1,401.97