Finding the Fourth Proportional to 2,150.16, 3,225.42 and 689.01

Step by Step Solution

1. Step 1: Write the proportion equation
   2,150.16 : 3,225.42 = 689.01 : x
2. Step 2: Convert to fraction form
   2,150.16/3,225.42 = 689.01/x
3. Step 3: Cross multiply
   2,150.16x = 3,225.42 × 689.01
4. Step 4: Simplify right side
   2,150.16x = 2,222,346.63
5. Step 5: Solve for x
   x = 2,222,346.63/2,150.16
6. Step 6: Final answer
   x = 1,033.57