Finding the Fourth Proportional to 1,608.95, 2,221.88 and 1,020.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,608.95 : 2,221.88 = 1,020.89 : x
2. Step 2: Convert to fraction form
   1,608.95/2,221.88 = 1,020.89/x
3. Step 3: Cross multiply
   1,608.95x = 2,221.88 × 1,020.89
4. Step 4: Simplify right side
   1,608.95x = 2,268,278.86
5. Step 5: Solve for x
   x = 2,268,278.86/1,608.95
6. Step 6: Final answer
   x = 1,409.79