Finding the Fourth Proportional to 7,072.88, 10,609.59 and 1,878.80

Step by Step Solution

1. Step 1: Write the proportion equation
   7,072.88 : 10,609.59 = 1,878.80 : x
2. Step 2: Convert to fraction form
   7,072.88/10,609.59 = 1,878.80/x
3. Step 3: Cross multiply
   7,072.88x = 10,609.59 × 1,878.80
4. Step 4: Simplify right side
   7,072.88x = 19,933,297.69
5. Step 5: Solve for x
   x = 19,933,297.69/7,072.88
6. Step 6: Final answer
   x = 2,818.27