Finding the Fourth Proportional to 2,146.89, 2,961.86 and 1,261.29

Step by Step Solution

1. Step 1: Write the proportion equation
   2,146.89 : 2,961.86 = 1,261.29 : x
2. Step 2: Convert to fraction form
   2,146.89/2,961.86 = 1,261.29/x
3. Step 3: Cross multiply
   2,146.89x = 2,961.86 × 1,261.29
4. Step 4: Simplify right side
   2,146.89x = 3,735,758.09
5. Step 5: Solve for x
   x = 3,735,758.09/2,146.89
6. Step 6: Final answer
   x = 1,740.08