Finding the Fourth Proportional to 780,456.96, 1,077,030.72 and 422,760.96

Step by Step Solution

1. Step 1: Write the proportion equation
   780,456.96 : 1,077,030.72 = 422,760.96 : x
2. Step 2: Convert to fraction form
   780,456.96/1,077,030.72 = 422,760.96/x
3. Step 3: Cross multiply
   780,456.96x = 1,077,030.72 × 422,760.96
4. Step 4: Simplify right side
   780,456.96x = 455,326,541,136.69
5. Step 5: Solve for x
   x = 455,326,541,136.69/780,456.96
6. Step 6: Final answer
   x = 583,410.19