Finding the Fourth Proportional to 2,178,431.01, 3,005,738.69 and 1,260,637.02

Step by Step Solution

1. Step 1: Write the proportion equation
   2,178,431.01 : 3,005,738.69 = 1,260,637.02 : x
2. Step 2: Convert to fraction form
   2,178,431.01/3,005,738.69 = 1,260,637.02/x
3. Step 3: Cross multiply
   2,178,431.01x = 3,005,738.69 × 1,260,637.02
4. Step 4: Simplify right side
   2,178,431.01x = 3,789,145,458,757.12
5. Step 5: Solve for x
   x = 3,789,145,458,757.12/2,178,431.01
6. Step 6: Final answer
   x = 1,739,391.99