Finding the Fourth Proportional to 2,876.59, 3,955.05 and 2,558.79

Step by Step Solution

1. Step 1: Write the proportion equation
   2,876.59 : 3,955.05 = 2,558.79 : x
2. Step 2: Convert to fraction form
   2,876.59/3,955.05 = 2,558.79/x
3. Step 3: Cross multiply
   2,876.59x = 3,955.05 × 2,558.79
4. Step 4: Simplify right side
   2,876.59x = 10,120,149.59
5. Step 5: Solve for x
   x = 10,120,149.59/2,876.59
6. Step 6: Final answer
   x = 3,518.11