Finding the Fourth Proportional to 1,117,922.82, 1,684,416.72 and 922,617.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,117,922.82 : 1,684,416.72 = 922,617.78 : x
2. Step 2: Convert to fraction form
   1,117,922.82/1,684,416.72 = 922,617.78/x
3. Step 3: Cross multiply
   1,117,922.82x = 1,684,416.72 × 922,617.78
4. Step 4: Simplify right side
   1,117,922.82x = 1,554,072,814,801.28
5. Step 5: Solve for x
   x = 1,554,072,814,801.28/1,117,922.82
6. Step 6: Final answer
   x = 1,390,143.21