Finding the Fourth Proportional to 543,498.96, 811,588.53 and 443,856.81

Step by Step Solution

1. Step 1: Write the proportion equation
   543,498.96 : 811,588.53 = 443,856.81 : x
2. Step 2: Convert to fraction form
   543,498.96/811,588.53 = 443,856.81/x
3. Step 3: Cross multiply
   543,498.96x = 811,588.53 × 443,856.81
4. Step 4: Simplify right side
   543,498.96x = 360,229,095,958.39
5. Step 5: Solve for x
   x = 360,229,095,958.39/543,498.96
6. Step 6: Final answer
   x = 662,796.29