Finding the Fourth Proportional to 900,759.25, 1,243,063.56 and 492,896.82

Step by Step Solution

1. Step 1: Write the proportion equation
   900,759.25 : 1,243,063.56 = 492,896.82 : x
2. Step 2: Convert to fraction form
   900,759.25/1,243,063.56 = 492,896.82/x
3. Step 3: Cross multiply
   900,759.25x = 1,243,063.56 × 492,896.82
4. Step 4: Simplify right side
   900,759.25x = 612,702,078,889.54
5. Step 5: Solve for x
   x = 612,702,078,889.54/900,759.25
6. Step 6: Final answer
   x = 680,206.26