Finding the Fourth Proportional to 1,373,274.10, 2,060,105.55 and 426,546.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,373,274.10 : 2,060,105.55 = 426,546.10 : x
2. Step 2: Convert to fraction form
   1,373,274.10/2,060,105.55 = 426,546.10/x
3. Step 3: Cross multiply
   1,373,274.10x = 2,060,105.55 × 426,546.10
4. Step 4: Simplify right side
   1,373,274.10x = 878,729,987,940.86
5. Step 5: Solve for x
   x = 878,729,987,940.86/1,373,274.10
6. Step 6: Final answer
   x = 639,879.53