Finding the Fourth Proportional to 680,576, 1,020,786.18 and 181,978.88

Step by Step Solution

1. Step 1: Write the proportion equation
   680,576 : 1,020,786.18 = 181,978.88 : x
2. Step 2: Convert to fraction form
   680,576/1,020,786.18 = 181,978.88/x
3. Step 3: Cross multiply
   680,576x = 1,020,786.18 × 181,978.88
4. Step 4: Simplify right side
   680,576x = 185,761,525,755.88
5. Step 5: Solve for x
   x = 185,761,525,755.88/680,576
6. Step 6: Final answer
   x = 272,947.51