Finding the Fourth Proportional to 900,895.51, 1,243,235.89 and 492,997.33

Step by Step Solution

1. Step 1: Write the proportion equation
   900,895.51 : 1,243,235.89 = 492,997.33 : x
2. Step 2: Convert to fraction form
   900,895.51/1,243,235.89 = 492,997.33/x
3. Step 3: Cross multiply
   900,895.51x = 1,243,235.89 × 492,997.33
4. Step 4: Simplify right side
   900,895.51x = 612,911,965,649.01
5. Step 5: Solve for x
   x = 612,911,965,649.01/900,895.51
6. Step 6: Final answer
   x = 680,336.36