Finding the Fourth Proportional to 2,068.59, 3,098.80 and 1,286.76

Step by Step Solution

1. Step 1: Write the proportion equation
   2,068.59 : 3,098.80 = 1,286.76 : x
2. Step 2: Convert to fraction form
   2,068.59/3,098.80 = 1,286.76/x
3. Step 3: Cross multiply
   2,068.59x = 3,098.80 × 1,286.76
4. Step 4: Simplify right side
   2,068.59x = 3,987,411.89
5. Step 5: Solve for x
   x = 3,987,411.89/2,068.59
6. Step 6: Final answer
   x = 1,927.60