Finding the Fourth Proportional to 2,158.38, 2,977.14 and 1,994.34

Step by Step Solution

1. Step 1: Write the proportion equation
   2,158.38 : 2,977.14 = 1,994.34 : x
2. Step 2: Convert to fraction form
   2,158.38/2,977.14 = 1,994.34/x
3. Step 3: Cross multiply
   2,158.38x = 2,977.14 × 1,994.34
4. Step 4: Simplify right side
   2,158.38x = 5,937,429.39
5. Step 5: Solve for x
   x = 5,937,429.39/2,158.38
6. Step 6: Final answer
   x = 2,750.87