Finding the Fourth Proportional to 2,280.62, 3,422.47 and 893.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,280.62 : 3,422.47 = 893.78 : x
2. Step 2: Convert to fraction form
   2,280.62/3,422.47 = 893.78/x
3. Step 3: Cross multiply
   2,280.62x = 3,422.47 × 893.78
4. Step 4: Simplify right side
   2,280.62x = 3,058,941.56
5. Step 5: Solve for x
   x = 3,058,941.56/2,280.62
6. Step 6: Final answer
   x = 1,341.27