Finding the Fourth Proportional to 1,190,395.69, 1,642,757.91 and 646,542.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,190,395.69 : 1,642,757.91 = 646,542.10 : x
2. Step 2: Convert to fraction form
   1,190,395.69/1,642,757.91 = 646,542.10/x
3. Step 3: Cross multiply
   1,190,395.69x = 1,642,757.91 × 646,542.10
4. Step 4: Simplify right side
   1,190,395.69x = 1,062,112,152,188.72
5. Step 5: Solve for x
   x = 1,062,112,152,188.72/1,190,395.69
6. Step 6: Final answer
   x = 892,234.54