Finding the Fourth Proportional to 4,131.05, 6,196.63 and 1,209.42

Step by Step Solution

1. Step 1: Write the proportion equation
   4,131.05 : 6,196.63 = 1,209.42 : x
2. Step 2: Convert to fraction form
   4,131.05/6,196.63 = 1,209.42/x
3. Step 3: Cross multiply
   4,131.05x = 6,196.63 × 1,209.42
4. Step 4: Simplify right side
   4,131.05x = 7,494,328.25
5. Step 5: Solve for x
   x = 7,494,328.25/4,131.05
6. Step 6: Final answer
   x = 1,814.15