Finding the Fourth Proportional to 1,229,436.18, 1,844,482.59 and 388,003.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,229,436.18 : 1,844,482.59 = 388,003.86 : x
2. Step 2: Convert to fraction form
   1,229,436.18/1,844,482.59 = 388,003.86/x
3. Step 3: Cross multiply
   1,229,436.18x = 1,844,482.59 × 388,003.86
4. Step 4: Simplify right side
   1,229,436.18x = 715,666,364,622.80
5. Step 5: Solve for x
   x = 715,666,364,622.80/1,229,436.18
6. Step 6: Final answer
   x = 582,109.41