Finding the Fourth Proportional to 3,190.10, 4,786.23 and 1,242.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,190.10 : 4,786.23 = 1,242.50 : x
2. Step 2: Convert to fraction form
   3,190.10/4,786.23 = 1,242.50/x
3. Step 3: Cross multiply
   3,190.10x = 4,786.23 × 1,242.50
4. Step 4: Simplify right side
   3,190.10x = 5,946,890.78
5. Step 5: Solve for x
   x = 5,946,890.78/3,190.10
6. Step 6: Final answer
   x = 1,864.17