Finding the Fourth Proportional to 1,186,128.62, 1,636,974.72 and 676,907.54

Step by Step Solution

1. Step 1: Write the proportion equation
   1,186,128.62 : 1,636,974.72 = 676,907.54 : x
2. Step 2: Convert to fraction form
   1,186,128.62/1,636,974.72 = 676,907.54/x
3. Step 3: Cross multiply
   1,186,128.62x = 1,636,974.72 × 676,907.54
4. Step 4: Simplify right side
   1,186,128.62x = 1,108,080,530,757.39
5. Step 5: Solve for x
   x = 1,108,080,530,757.39/1,186,128.62
6. Step 6: Final answer
   x = 934,199.30