Finding the Fourth Proportional to 2,081.74, 3,116.98 and 1,299.87

Step by Step Solution

1. Step 1: Write the proportion equation
   2,081.74 : 3,116.98 = 1,299.87 : x
2. Step 2: Convert to fraction form
   2,081.74/3,116.98 = 1,299.87/x
3. Step 3: Cross multiply
   2,081.74x = 3,116.98 × 1,299.87
4. Step 4: Simplify right side
   2,081.74x = 4,051,668.79
5. Step 5: Solve for x
   x = 4,051,668.79/2,081.74
6. Step 6: Final answer
   x = 1,946.29