Finding the Fourth Proportional to 1,071,392.18, 1,607,036.34 and 397,604.84

Step by Step Solution

1. Step 1: Write the proportion equation
   1,071,392.18 : 1,607,036.34 = 397,604.84 : x
2. Step 2: Convert to fraction form
   1,071,392.18/1,607,036.34 = 397,604.84/x
3. Step 3: Cross multiply
   1,071,392.18x = 1,607,036.34 × 397,604.84
4. Step 4: Simplify right side
   1,071,392.18x = 638,965,426,839.89
5. Step 5: Solve for x
   x = 638,965,426,839.89/1,071,392.18
6. Step 6: Final answer
   x = 596,387.99