Finding the Fourth Proportional to 2,142.99, 2,957.60 and 1,198.83

Step by Step Solution

1. Step 1: Write the proportion equation
   2,142.99 : 2,957.60 = 1,198.83 : x
2. Step 2: Convert to fraction form
   2,142.99/2,957.60 = 1,198.83/x
3. Step 3: Cross multiply
   2,142.99x = 2,957.60 × 1,198.83
4. Step 4: Simplify right side
   2,142.99x = 3,545,653.61
5. Step 5: Solve for x
   x = 3,545,653.61/2,142.99
6. Step 6: Final answer
   x = 1,654.54