Finding the Fourth Proportional to 1,222,920.72, 1,826,146.17 and 998,726.22

Step by Step Solution

1. Step 1: Write the proportion equation
   1,222,920.72 : 1,826,146.17 = 998,726.22 : x
2. Step 2: Convert to fraction form
   1,222,920.72/1,826,146.17 = 998,726.22/x
3. Step 3: Cross multiply
   1,222,920.72x = 1,826,146.17 × 998,726.22
4. Step 4: Simplify right side
   1,222,920.72x = 1,823,820,061,531.58
5. Step 5: Solve for x
   x = 1,823,820,061,531.58/1,222,920.72
6. Step 6: Final answer
   x = 1,491,364.10