Finding the Fourth Proportional to 2,172.86, 3,259.60 and 1,076.94

Step by Step Solution

1. Step 1: Write the proportion equation
   2,172.86 : 3,259.60 = 1,076.94 : x
2. Step 2: Convert to fraction form
   2,172.86/3,259.60 = 1,076.94/x
3. Step 3: Cross multiply
   2,172.86x = 3,259.60 × 1,076.94
4. Step 4: Simplify right side
   2,172.86x = 3,510,393.62
5. Step 5: Solve for x
   x = 3,510,393.62/2,172.86
6. Step 6: Final answer
   x = 1,615.56