Finding the Fourth Proportional to 900,758.25, 1,243,062.18 and 492,895.82

Step by Step Solution

1. Step 1: Write the proportion equation
   900,758.25 : 1,243,062.18 = 492,895.82 : x
2. Step 2: Convert to fraction form
   900,758.25/1,243,062.18 = 492,895.82/x
3. Step 3: Cross multiply
   900,758.25x = 1,243,062.18 × 492,895.82
4. Step 4: Simplify right side
   900,758.25x = 612,700,155,629.74
5. Step 5: Solve for x
   x = 612,700,155,629.74/900,758.25
6. Step 6: Final answer
   x = 680,204.88