Finding the Fourth Proportional to 680,997.98, 1,021,142.27 and 254,182.78

Step by Step Solution

1. Step 1: Write the proportion equation
   680,997.98 : 1,021,142.27 = 254,182.78 : x
2. Step 2: Convert to fraction form
   680,997.98/1,021,142.27 = 254,182.78/x
3. Step 3: Cross multiply
   680,997.98x = 1,021,142.27 × 254,182.78
4. Step 4: Simplify right side
   680,997.98x = 259,556,781,446.22
5. Step 5: Solve for x
   x = 259,556,781,446.22/680,997.98
6. Step 6: Final answer
   x = 381,141.78