Finding the Fourth Proportional to 2,561.97, 3,840.19 and 1,242.94

Step by Step Solution

1. Step 1: Write the proportion equation
   2,561.97 : 3,840.19 = 1,242.94 : x
2. Step 2: Convert to fraction form
   2,561.97/3,840.19 = 1,242.94/x
3. Step 3: Cross multiply
   2,561.97x = 3,840.19 × 1,242.94
4. Step 4: Simplify right side
   2,561.97x = 4,773,100.34
5. Step 5: Solve for x
   x = 4,773,100.34/2,561.97
6. Step 6: Final answer
   x = 1,863.06