Finding the Fourth Proportional to 2,281.34, 3,422.52 and 800.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,281.34 : 3,422.52 = 800.78 : x
2. Step 2: Convert to fraction form
   2,281.34/3,422.52 = 800.78/x
3. Step 3: Cross multiply
   2,281.34x = 3,422.52 × 800.78
4. Step 4: Simplify right side
   2,281.34x = 2,740,685.57
5. Step 5: Solve for x
   x = 2,740,685.57/2,281.34
6. Step 6: Final answer
   x = 1,201.35