Finding the Fourth Proportional to 3,072.78, 4,240.17 and 1,746.42

Step by Step Solution

1. Step 1: Write the proportion equation
   3,072.78 : 4,240.17 = 1,746.42 : x
2. Step 2: Convert to fraction form
   3,072.78/4,240.17 = 1,746.42/x
3. Step 3: Cross multiply
   3,072.78x = 4,240.17 × 1,746.42
4. Step 4: Simplify right side
   3,072.78x = 7,405,117.69
5. Step 5: Solve for x
   x = 7,405,117.69/3,072.78
6. Step 6: Final answer
   x = 2,409.91