Finding the Fourth Proportional to 2,146.91, 2,961.79 and 1,262.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,146.91 : 2,961.79 = 1,262.31 : x
2. Step 2: Convert to fraction form
   2,146.91/2,961.79 = 1,262.31/x
3. Step 3: Cross multiply
   2,146.91x = 2,961.79 × 1,262.31
4. Step 4: Simplify right side
   2,146.91x = 3,738,694.75
5. Step 5: Solve for x
   x = 3,738,694.75/2,146.91
6. Step 6: Final answer
   x = 1,741.43