Finding the Fourth Proportional to 1,092,139.50, 1,636,922.57 and 492,398.49

Step by Step Solution

1. Step 1: Write the proportion equation
   1,092,139.50 : 1,636,922.57 = 492,398.49 : x
2. Step 2: Convert to fraction form
   1,092,139.50/1,636,922.57 = 492,398.49/x
3. Step 3: Cross multiply
   1,092,139.50x = 1,636,922.57 × 492,398.49
4. Step 4: Simplify right side
   1,092,139.50x = 806,018,208,161.13
5. Step 5: Solve for x
   x = 806,018,208,161.13/1,092,139.50
6. Step 6: Final answer
   x = 738,017.63