Finding the Fourth Proportional to 926,661.50, 1,389,459.89 and 493,845.99

Step by Step Solution

1. Step 1: Write the proportion equation
   926,661.50 : 1,389,459.89 = 493,845.99 : x
2. Step 2: Convert to fraction form
   926,661.50/1,389,459.89 = 493,845.99/x
3. Step 3: Cross multiply
   926,661.50x = 1,389,459.89 × 493,845.99
4. Step 4: Simplify right side
   926,661.50x = 686,179,196,176.96
5. Step 5: Solve for x
   x = 686,179,196,176.96/926,661.50
6. Step 6: Final answer
   x = 740,485.27