Finding the Fourth Proportional to 2,814.76, 4,196.79 and 2,580.57

Step by Step Solution

1. Step 1: Write the proportion equation
   2,814.76 : 4,196.79 = 2,580.57 : x
2. Step 2: Convert to fraction form
   2,814.76/4,196.79 = 2,580.57/x
3. Step 3: Cross multiply
   2,814.76x = 4,196.79 × 2,580.57
4. Step 4: Simplify right side
   2,814.76x = 10,830,110.37
5. Step 5: Solve for x
   x = 10,830,110.37/2,814.76
6. Step 6: Final answer
   x = 3,847.61