Finding the Fourth Proportional to 2,143.72, 3,208.29 and 1,658.94

Step by Step Solution

1. Step 1: Write the proportion equation
   2,143.72 : 3,208.29 = 1,658.94 : x
2. Step 2: Convert to fraction form
   2,143.72/3,208.29 = 1,658.94/x
3. Step 3: Cross multiply
   2,143.72x = 3,208.29 × 1,658.94
4. Step 4: Simplify right side
   2,143.72x = 5,322,360.61
5. Step 5: Solve for x
   x = 5,322,360.61/2,143.72
6. Step 6: Final answer
   x = 2,482.77