Finding the Fourth Proportional to 2,116.38, 3,176.20 and 945.94

Step by Step Solution

1. Step 1: Write the proportion equation
   2,116.38 : 3,176.20 = 945.94 : x
2. Step 2: Convert to fraction form
   2,116.38/3,176.20 = 945.94/x
3. Step 3: Cross multiply
   2,116.38x = 3,176.20 × 945.94
4. Step 4: Simplify right side
   2,116.38x = 3,004,494.63
5. Step 5: Solve for x
   x = 3,004,494.63/2,116.38
6. Step 6: Final answer
   x = 1,419.64