Finding the Fourth Proportional to 1,619.04, 2,429.83 and 1,128.90

Step by Step Solution

1. Step 1: Write the proportion equation
   1,619.04 : 2,429.83 = 1,128.90 : x
2. Step 2: Convert to fraction form
   1,619.04/2,429.83 = 1,128.90/x
3. Step 3: Cross multiply
   1,619.04x = 2,429.83 × 1,128.90
4. Step 4: Simplify right side
   1,619.04x = 2,743,035.09
5. Step 5: Solve for x
   x = 2,743,035.09/1,619.04
6. Step 6: Final answer
   x = 1,694.24