Finding the Fourth Proportional to 2,789.91, 4,185.61 and 1,401.57

Step by Step Solution

1. Step 1: Write the proportion equation
   2,789.91 : 4,185.61 = 1,401.57 : x
2. Step 2: Convert to fraction form
   2,789.91/4,185.61 = 1,401.57/x
3. Step 3: Cross multiply
   2,789.91x = 4,185.61 × 1,401.57
4. Step 4: Simplify right side
   2,789.91x = 5,866,421.90
5. Step 5: Solve for x
   x = 5,866,421.90/2,789.91
6. Step 6: Final answer
   x = 2,102.73