Finding the Fourth Proportional to 2,706.88, 4,057.88 and 1,404.40

Step by Step Solution

1. Step 1: Write the proportion equation
   2,706.88 : 4,057.88 = 1,404.40 : x
2. Step 2: Convert to fraction form
   2,706.88/4,057.88 = 1,404.40/x
3. Step 3: Cross multiply
   2,706.88x = 4,057.88 × 1,404.40
4. Step 4: Simplify right side
   2,706.88x = 5,698,886.67
5. Step 5: Solve for x
   x = 5,698,886.67/2,706.88
6. Step 6: Final answer
   x = 2,105.33