Finding the Fourth Proportional to 954,436, 1,431,662.64 and 289,588

Step by Step Solution

1. Step 1: Write the proportion equation
   954,436 : 1,431,662.64 = 289,588 : x
2. Step 2: Convert to fraction form
   954,436/1,431,662.64 = 289,588/x
3. Step 3: Cross multiply
   954,436x = 1,431,662.64 × 289,588
4. Step 4: Simplify right side
   954,436x = 414,592,320,592.32
5. Step 5: Solve for x
   x = 414,592,320,592.32/954,436
6. Step 6: Final answer
   x = 434,384.62