Finding the Fourth Proportional to 1,606.69, 2,221.46 and 1,422.01

Step by Step Solution

1. Step 1: Write the proportion equation
   1,606.69 : 2,221.46 = 1,422.01 : x
2. Step 2: Convert to fraction form
   1,606.69/2,221.46 = 1,422.01/x
3. Step 3: Cross multiply
   1,606.69x = 2,221.46 × 1,422.01
4. Step 4: Simplify right side
   1,606.69x = 3,158,938.33
5. Step 5: Solve for x
   x = 3,158,938.33/1,606.69
6. Step 6: Final answer
   x = 1,966.12