Finding the Fourth Proportional to 2,064.94, 3,098.70 and 1,286.47

Step by Step Solution

1. Step 1: Write the proportion equation
   2,064.94 : 3,098.70 = 1,286.47 : x
2. Step 2: Convert to fraction form
   2,064.94/3,098.70 = 1,286.47/x
3. Step 3: Cross multiply
   2,064.94x = 3,098.70 × 1,286.47
4. Step 4: Simplify right side
   2,064.94x = 3,986,384.59
5. Step 5: Solve for x
   x = 3,986,384.59/2,064.94
6. Step 6: Final answer
   x = 1,930.51