Finding the Fourth Proportional to 1,668.96, 2,302.22 and 1,039.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,668.96 : 2,302.22 = 1,039.59 : x
2. Step 2: Convert to fraction form
   1,668.96/2,302.22 = 1,039.59/x
3. Step 3: Cross multiply
   1,668.96x = 2,302.22 × 1,039.59
4. Step 4: Simplify right side
   1,668.96x = 2,393,364.89
5. Step 5: Solve for x
   x = 2,393,364.89/1,668.96
6. Step 6: Final answer
   x = 1,434.05