Finding the Fourth Proportional to 1,260,901.20, 1,739,979.72 and 687,936.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,260,901.20 : 1,739,979.72 = 687,936.72 : x
2. Step 2: Convert to fraction form
   1,260,901.20/1,739,979.72 = 687,936.72/x
3. Step 3: Cross multiply
   1,260,901.20x = 1,739,979.72 × 687,936.72
4. Step 4: Simplify right side
   1,260,901.20x = 1,196,995,941,443.32
5. Step 5: Solve for x
   x = 1,196,995,941,443.32/1,260,901.20
6. Step 6: Final answer
   x = 949,317.79