Finding the Fourth Proportional to 819,109.61, 1,130,322.61 and 470,169.39

Step by Step Solution

1. Step 1: Write the proportion equation
   819,109.61 : 1,130,322.61 = 470,169.39 : x
2. Step 2: Convert to fraction form
   819,109.61/1,130,322.61 = 470,169.39/x
3. Step 3: Cross multiply
   819,109.61x = 1,130,322.61 × 470,169.39
4. Step 4: Simplify right side
   819,109.61x = 531,443,090,871.48
5. Step 5: Solve for x
   x = 531,443,090,871.48/819,109.61
6. Step 6: Final answer
   x = 648,805.83