Finding the Fourth Proportional to 1,609.07, 2,222.79 and 1,490

Step by Step Solution

1. Step 1: Write the proportion equation
   1,609.07 : 2,222.79 = 1,490 : x
2. Step 2: Convert to fraction form
   1,609.07/2,222.79 = 1,490/x
3. Step 3: Cross multiply
   1,609.07x = 2,222.79 × 1,490
4. Step 4: Simplify right side
   1,609.07x = 3,311,957.10
5. Step 5: Solve for x
   x = 3,311,957.10/1,609.07
6. Step 6: Final answer
   x = 2,058.31