Finding the Fourth Proportional to 766,315.69, 1,057,548.56 and 426,783.94

Step by Step Solution

1. Step 1: Write the proportion equation
   766,315.69 : 1,057,548.56 = 426,783.94 : x
2. Step 2: Convert to fraction form
   766,315.69/1,057,548.56 = 426,783.94/x
3. Step 3: Cross multiply
   766,315.69x = 1,057,548.56 × 426,783.94
4. Step 4: Simplify right side
   766,315.69x = 451,344,736,400.34
5. Step 5: Solve for x
   x = 451,344,736,400.34/766,315.69
6. Step 6: Final answer
   x = 588,980.16