Finding the Fourth Proportional to 1,636.88, 2,255.72 and 1,046.39

Step by Step Solution

1. Step 1: Write the proportion equation
   1,636.88 : 2,255.72 = 1,046.39 : x
2. Step 2: Convert to fraction form
   1,636.88/2,255.72 = 1,046.39/x
3. Step 3: Cross multiply
   1,636.88x = 2,255.72 × 1,046.39
4. Step 4: Simplify right side
   1,636.88x = 2,360,346.34
5. Step 5: Solve for x
   x = 2,360,346.34/1,636.88
6. Step 6: Final answer
   x = 1,441.98