Finding the Fourth Proportional to 810,384.96, 1,118,328.48 and 447,798.72

Step by Step Solution

1. Step 1: Write the proportion equation
   810,384.96 : 1,118,328.48 = 447,798.72 : x
2. Step 2: Convert to fraction form
   810,384.96/1,118,328.48 = 447,798.72/x
3. Step 3: Cross multiply
   810,384.96x = 1,118,328.48 × 447,798.72
4. Step 4: Simplify right side
   810,384.96x = 500,786,061,883.55
5. Step 5: Solve for x
   x = 500,786,061,883.55/810,384.96
6. Step 6: Final answer
   x = 617,960.71