Finding the Fourth Proportional to 2,074.42, 3,114.78 and 1,986.94

Step by Step Solution

1. Step 1: Write the proportion equation
   2,074.42 : 3,114.78 = 1,986.94 : x
2. Step 2: Convert to fraction form
   2,074.42/3,114.78 = 1,986.94/x
3. Step 3: Cross multiply
   2,074.42x = 3,114.78 × 1,986.94
4. Step 4: Simplify right side
   2,074.42x = 6,188,877.42
5. Step 5: Solve for x
   x = 6,188,877.42/2,074.42
6. Step 6: Final answer
   x = 2,983.42