Finding the Fourth Proportional to 2,328.34, 3,213.16 and 1,280.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,328.34 : 3,213.16 = 1,280.42 : x
2. Step 2: Convert to fraction form
   2,328.34/3,213.16 = 1,280.42/x
3. Step 3: Cross multiply
   2,328.34x = 3,213.16 × 1,280.42
4. Step 4: Simplify right side
   2,328.34x = 4,114,194.33
5. Step 5: Solve for x
   x = 4,114,194.33/2,328.34
6. Step 6: Final answer
   x = 1,767.01