Finding the Fourth Proportional to 2,106.81, 3,160.25 and 951.21

Step by Step Solution

1. Step 1: Write the proportion equation
   2,106.81 : 3,160.25 = 951.21 : x
2. Step 2: Convert to fraction form
   2,106.81/3,160.25 = 951.21/x
3. Step 3: Cross multiply
   2,106.81x = 3,160.25 × 951.21
4. Step 4: Simplify right side
   2,106.81x = 3,006,060.21
5. Step 5: Solve for x
   x = 3,006,060.21/2,106.81
6. Step 6: Final answer
   x = 1,426.83