Finding the Fourth Proportional to 2,646.86, 3,962.49 and 1,956.60

Step by Step Solution

1. Step 1: Write the proportion equation
   2,646.86 : 3,962.49 = 1,956.60 : x
2. Step 2: Convert to fraction form
   2,646.86/3,962.49 = 1,956.60/x
3. Step 3: Cross multiply
   2,646.86x = 3,962.49 × 1,956.60
4. Step 4: Simplify right side
   2,646.86x = 7,753,007.93
5. Step 5: Solve for x
   x = 7,753,007.93/2,646.86
6. Step 6: Final answer
   x = 2,929.14