Finding the Fourth Proportional to 2,486,500.12, 3,431,129.52 and 1,399,148.02

Step by Step Solution

1. Step 1: Write the proportion equation
   2,486,500.12 : 3,431,129.52 = 1,399,148.02 : x
2. Step 2: Convert to fraction form
   2,486,500.12/3,431,129.52 = 1,399,148.02/x
3. Step 3: Cross multiply
   2,486,500.12x = 3,431,129.52 × 1,399,148.02
4. Step 4: Simplify right side
   2,486,500.12x = 4,800,658,074,271.55
5. Step 5: Solve for x
   x = 4,800,658,074,271.55/2,486,500.12
6. Step 6: Final answer
   x = 1,930,688.86