Finding the Fourth Proportional to 900,981, 1,243,353.58 and 493,083.02

Step by Step Solution

1. Step 1: Write the proportion equation
   900,981 : 1,243,353.58 = 493,083.02 : x
2. Step 2: Convert to fraction form
   900,981/1,243,353.58 = 493,083.02/x
3. Step 3: Cross multiply
   900,981x = 1,243,353.58 × 493,083.02
4. Step 4: Simplify right side
   900,981x = 613,076,540,029.89
5. Step 5: Solve for x
   x = 613,076,540,029.89/900,981
6. Step 6: Final answer
   x = 680,454.46