Finding the Fourth Proportional to 1,464.89, 2,021.90 and 875.61

Step by Step Solution

1. Step 1: Write the proportion equation
   1,464.89 : 2,021.90 = 875.61 : x
2. Step 2: Convert to fraction form
   1,464.89/2,021.90 = 875.61/x
3. Step 3: Cross multiply
   1,464.89x = 2,021.90 × 875.61
4. Step 4: Simplify right side
   1,464.89x = 1,770,391.48
5. Step 5: Solve for x
   x = 1,770,391.48/1,464.89
6. Step 6: Final answer
   x = 1,208.55