Finding the Fourth Proportional to 2,146.08, 2,960.36 and 1,261.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,146.08 : 2,960.36 = 1,261.72 : x
2. Step 2: Convert to fraction form
   2,146.08/2,960.36 = 1,261.72/x
3. Step 3: Cross multiply
   2,146.08x = 2,960.36 × 1,261.72
4. Step 4: Simplify right side
   2,146.08x = 3,735,145.42
5. Step 5: Solve for x
   x = 3,735,145.42/2,146.08
6. Step 6: Final answer
   x = 1,740.45