Finding the Fourth Proportional to 2,580.30, 3,869.64 and 1,485.18

Step by Step Solution

1. Step 1: Write the proportion equation
   2,580.30 : 3,869.64 = 1,485.18 : x
2. Step 2: Convert to fraction form
   2,580.30/3,869.64 = 1,485.18/x
3. Step 3: Cross multiply
   2,580.30x = 3,869.64 × 1,485.18
4. Step 4: Simplify right side
   2,580.30x = 5,747,111.94
5. Step 5: Solve for x
   x = 5,747,111.94/2,580.30
6. Step 6: Final answer
   x = 2,227.30