Finding the Fourth Proportional to 3,401.85, 5,097.18 and 2,100.63

Step by Step Solution

1. Step 1: Write the proportion equation
   3,401.85 : 5,097.18 = 2,100.63 : x
2. Step 2: Convert to fraction form
   3,401.85/5,097.18 = 2,100.63/x
3. Step 3: Cross multiply
   3,401.85x = 5,097.18 × 2,100.63
4. Step 4: Simplify right side
   3,401.85x = 10,707,289.22
5. Step 5: Solve for x
   x = 10,707,289.22/3,401.85
6. Step 6: Final answer
   x = 3,147.49