Finding the Fourth Proportional to 861,683.69, 1,189,100.32 and 479,710.51

Step by Step Solution

1. Step 1: Write the proportion equation
   861,683.69 : 1,189,100.32 = 479,710.51 : x
2. Step 2: Convert to fraction form
   861,683.69/1,189,100.32 = 479,710.51/x
3. Step 3: Cross multiply
   861,683.69x = 1,189,100.32 × 479,710.51
4. Step 4: Simplify right side
   861,683.69x = 570,423,916,776.34
5. Step 5: Solve for x
   x = 570,423,916,776.34/861,683.69
6. Step 6: Final answer
   x = 661,987.60