Finding the Fourth Proportional to 2,558.18, 3,815.96 and 2,515.84

Step by Step Solution

1. Step 1: Write the proportion equation
   2,558.18 : 3,815.96 = 2,515.84 : x
2. Step 2: Convert to fraction form
   2,558.18/3,815.96 = 2,515.84/x
3. Step 3: Cross multiply
   2,558.18x = 3,815.96 × 2,515.84
4. Step 4: Simplify right side
   2,558.18x = 9,600,344.81
5. Step 5: Solve for x
   x = 9,600,344.81/2,558.18
6. Step 6: Final answer
   x = 3,752.80