Finding the Fourth Proportional to 2,580.35, 3,868.71 and 1,409.39

Step by Step Solution

1. Step 1: Write the proportion equation
   2,580.35 : 3,868.71 = 1,409.39 : x
2. Step 2: Convert to fraction form
   2,580.35/3,868.71 = 1,409.39/x
3. Step 3: Cross multiply
   2,580.35x = 3,868.71 × 1,409.39
4. Step 4: Simplify right side
   2,580.35x = 5,452,501.84
5. Step 5: Solve for x
   x = 5,452,501.84/2,580.35
6. Step 6: Final answer
   x = 2,113.09