Finding the Fourth Proportional to 1,059.09, 1,588.59 and 289.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,059.09 : 1,588.59 = 289.59 : x
2. Step 2: Convert to fraction form
   1,059.09/1,588.59 = 289.59/x
3. Step 3: Cross multiply
   1,059.09x = 1,588.59 × 289.59
4. Step 4: Simplify right side
   1,059.09x = 460,039.78
5. Step 5: Solve for x
   x = 460,039.78/1,059.09
6. Step 6: Final answer
   x = 434.37