Finding the Fourth Proportional to 2,328.51, 3,213.27 and 1,280.57

Step by Step Solution

1. Step 1: Write the proportion equation
   2,328.51 : 3,213.27 = 1,280.57 : x
2. Step 2: Convert to fraction form
   2,328.51/3,213.27 = 1,280.57/x
3. Step 3: Cross multiply
   2,328.51x = 3,213.27 × 1,280.57
4. Step 4: Simplify right side
   2,328.51x = 4,114,801.10
5. Step 5: Solve for x
   x = 4,114,801.10/2,328.51
6. Step 6: Final answer
   x = 1,767.14