Finding the Fourth Proportional to 762,144.69, 1,051,683.89 and 439,958.58

Step by Step Solution

1. Step 1: Write the proportion equation
   762,144.69 : 1,051,683.89 = 439,958.58 : x
2. Step 2: Convert to fraction form
   762,144.69/1,051,683.89 = 439,958.58/x
3. Step 3: Cross multiply
   762,144.69x = 1,051,683.89 × 439,958.58
4. Step 4: Simplify right side
   762,144.69x = 462,697,348,653.48
5. Step 5: Solve for x
   x = 462,697,348,653.48/762,144.69
6. Step 6: Final answer
   x = 607,099.09