Finding the Fourth Proportional to 2,285.47, 3,430.06 and 1,190.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,285.47 : 3,430.06 = 1,190.15 : x
2. Step 2: Convert to fraction form
   2,285.47/3,430.06 = 1,190.15/x
3. Step 3: Cross multiply
   2,285.47x = 3,430.06 × 1,190.15
4. Step 4: Simplify right side
   2,285.47x = 4,082,265.78
5. Step 5: Solve for x
   x = 4,082,265.78/2,285.47
6. Step 6: Final answer
   x = 1,786.18