Finding the Fourth Proportional to 2,541.60, 3,810.24 and 1,386.24

Step by Step Solution

1. Step 1: Write the proportion equation
   2,541.60 : 3,810.24 = 1,386.24 : x
2. Step 2: Convert to fraction form
   2,541.60/3,810.24 = 1,386.24/x
3. Step 3: Cross multiply
   2,541.60x = 3,810.24 × 1,386.24
4. Step 4: Simplify right side
   2,541.60x = 5,281,907.10
5. Step 5: Solve for x
   x = 5,281,907.10/2,541.60
6. Step 6: Final answer
   x = 2,078.18