Finding the Fourth Proportional to 2,620.49, 3,613.82 and 1,878.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,620.49 : 3,613.82 = 1,878.12 : x
2. Step 2: Convert to fraction form
   2,620.49/3,613.82 = 1,878.12/x
3. Step 3: Cross multiply
   2,620.49x = 3,613.82 × 1,878.12
4. Step 4: Simplify right side
   2,620.49x = 6,787,178.23
5. Step 5: Solve for x
   x = 6,787,178.23/2,620.49
6. Step 6: Final answer
   x = 2,590.05