Finding the Fourth Proportional to 2,143.94, 2,958.62 and 1,199.82

Step by Step Solution

1. Step 1: Write the proportion equation
   2,143.94 : 2,958.62 = 1,199.82 : x
2. Step 2: Convert to fraction form
   2,143.94/2,958.62 = 1,199.82/x
3. Step 3: Cross multiply
   2,143.94x = 2,958.62 × 1,199.82
4. Step 4: Simplify right side
   2,143.94x = 3,549,811.45
5. Step 5: Solve for x
   x = 3,549,811.45/2,143.94
6. Step 6: Final answer
   x = 1,655.74