Finding the Fourth Proportional to 3,040.89, 4,196.18 and 1,781.78

Step by Step Solution

1. Step 1: Write the proportion equation
   3,040.89 : 4,196.18 = 1,781.78 : x
2. Step 2: Convert to fraction form
   3,040.89/4,196.18 = 1,781.78/x
3. Step 3: Cross multiply
   3,040.89x = 4,196.18 × 1,781.78
4. Step 4: Simplify right side
   3,040.89x = 7,476,669.60
5. Step 5: Solve for x
   x = 7,476,669.60/3,040.89
6. Step 6: Final answer
   x = 2,458.71