Finding the Fourth Proportional to 2,142.47, 2,956.58 and 1,185.38

Step by Step Solution

1. Step 1: Write the proportion equation
   2,142.47 : 2,956.58 = 1,185.38 : x
2. Step 2: Convert to fraction form
   2,142.47/2,956.58 = 1,185.38/x
3. Step 3: Cross multiply
   2,142.47x = 2,956.58 × 1,185.38
4. Step 4: Simplify right side
   2,142.47x = 3,504,670.80
5. Step 5: Solve for x
   x = 3,504,670.80/2,142.47
6. Step 6: Final answer
   x = 1,635.81