Finding the Fourth Proportional to 1,379,940.91, 1,904,318.56 and 768,080.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,379,940.91 : 1,904,318.56 = 768,080.50 : x
2. Step 2: Convert to fraction form
   1,379,940.91/1,904,318.56 = 768,080.50/x
3. Step 3: Cross multiply
   1,379,940.91x = 1,904,318.56 × 768,080.50
4. Step 4: Simplify right side
   1,379,940.91x = 1,462,669,948,958.83
5. Step 5: Solve for x
   x = 1,462,669,948,958.83/1,379,940.91
6. Step 6: Final answer
   x = 1,059,951.15