Finding the Fourth Proportional to 1,950.72, 2,690.16 and 1,286.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,950.72 : 2,690.16 = 1,286.42 : x
2. Step 2: Convert to fraction form
   1,950.72/2,690.16 = 1,286.42/x
3. Step 3: Cross multiply
   1,950.72x = 2,690.16 × 1,286.42
4. Step 4: Simplify right side
   1,950.72x = 3,460,662.18
5. Step 5: Solve for x
   x = 3,460,662.18/1,950.72
6. Step 6: Final answer
   x = 1,774.04