Finding the Fourth Proportional to 2,111.81, 3,167.74 and 650.95

Step by Step Solution

1. Step 1: Write the proportion equation
   2,111.81 : 3,167.74 = 650.95 : x
2. Step 2: Convert to fraction form
   2,111.81/3,167.74 = 650.95/x
3. Step 3: Cross multiply
   2,111.81x = 3,167.74 × 650.95
4. Step 4: Simplify right side
   2,111.81x = 2,062,051.07
5. Step 5: Solve for x
   x = 2,062,051.07/2,111.81
6. Step 6: Final answer
   x = 976.44