Finding the Fourth Proportional to 2,571,518.06, 3,857,536.29 and 678,390.38

Step by Step Solution

1. Step 1: Write the proportion equation
   2,571,518.06 : 3,857,536.29 = 678,390.38 : x
2. Step 2: Convert to fraction form
   2,571,518.06/3,857,536.29 = 678,390.38/x
3. Step 3: Cross multiply
   2,571,518.06x = 3,857,536.29 × 678,390.38
4. Step 4: Simplify right side
   2,571,518.06x = 2,616,915,509,636.89
5. Step 5: Solve for x
   x = 2,616,915,509,636.89/2,571,518.06
6. Step 6: Final answer
   x = 1,017,653.95