Finding the Fourth Proportional to 3,698.46, 5,103.99 and 2,126.61

Step by Step Solution

1. Step 1: Write the proportion equation
   3,698.46 : 5,103.99 = 2,126.61 : x
2. Step 2: Convert to fraction form
   3,698.46/5,103.99 = 2,126.61/x
3. Step 3: Cross multiply
   3,698.46x = 5,103.99 × 2,126.61
4. Step 4: Simplify right side
   3,698.46x = 10,854,196.17
5. Step 5: Solve for x
   x = 10,854,196.17/3,698.46
6. Step 6: Final answer
   x = 2,934.79