Finding the Fourth Proportional to 2,541.94, 3,806.43 and 1,240

Step by Step Solution

1. Step 1: Write the proportion equation
   2,541.94 : 3,806.43 = 1,240 : x
2. Step 2: Convert to fraction form
   2,541.94/3,806.43 = 1,240/x
3. Step 3: Cross multiply
   2,541.94x = 3,806.43 × 1,240
4. Step 4: Simplify right side
   2,541.94x = 4,719,973.20
5. Step 5: Solve for x
   x = 4,719,973.20/2,541.94
6. Step 6: Final answer
   x = 1,856.84