Finding the Fourth Proportional to 1,414.37, 2,122.52 and 864.87

Step by Step Solution

1. Step 1: Write the proportion equation
   1,414.37 : 2,122.52 = 864.87 : x
2. Step 2: Convert to fraction form
   1,414.37/2,122.52 = 864.87/x
3. Step 3: Cross multiply
   1,414.37x = 2,122.52 × 864.87
4. Step 4: Simplify right side
   1,414.37x = 1,835,699.55
5. Step 5: Solve for x
   x = 1,835,699.55/1,414.37
6. Step 6: Final answer
   x = 1,297.90