Finding the Fourth Proportional to 3,401.78, 5,101.52 and 1,210.19

Step by Step Solution

1. Step 1: Write the proportion equation
   3,401.78 : 5,101.52 = 1,210.19 : x
2. Step 2: Convert to fraction form
   3,401.78/5,101.52 = 1,210.19/x
3. Step 3: Cross multiply
   3,401.78x = 5,101.52 × 1,210.19
4. Step 4: Simplify right side
   3,401.78x = 6,173,776.93
5. Step 5: Solve for x
   x = 6,173,776.93/3,401.78
6. Step 6: Final answer
   x = 1,814.87