Finding the Fourth Proportional to 2,531.34, 3,794.58 and 798.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,531.34 : 3,794.58 = 798.78 : x
2. Step 2: Convert to fraction form
   2,531.34/3,794.58 = 798.78/x
3. Step 3: Cross multiply
   2,531.34x = 3,794.58 × 798.78
4. Step 4: Simplify right side
   2,531.34x = 3,031,034.61
5. Step 5: Solve for x
   x = 3,031,034.61/2,531.34
6. Step 6: Final answer
   x = 1,197.40