Finding the Fourth Proportional to 1,757,805.15, 2,636,435.72 and 678,160.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,757,805.15 : 2,636,435.72 = 678,160.25 : x
2. Step 2: Convert to fraction form
   1,757,805.15/2,636,435.72 = 678,160.25/x
3. Step 3: Cross multiply
   1,757,805.15x = 2,636,435.72 × 678,160.25
4. Step 4: Simplify right side
   1,757,805.15x = 1,787,925,890,411.15
5. Step 5: Solve for x
   x = 1,787,925,890,411.15/1,757,805.15
6. Step 6: Final answer
   x = 1,017,135.43