Finding the Fourth Proportional to 2,536,128.05, 3,499,856.78 and 1,390,183.79

Step by Step Solution

1. Step 1: Write the proportion equation
   2,536,128.05 : 3,499,856.78 = 1,390,183.79 : x
2. Step 2: Convert to fraction form
   2,536,128.05/3,499,856.78 = 1,390,183.79/x
3. Step 3: Cross multiply
   2,536,128.05x = 3,499,856.78 × 1,390,183.79
4. Step 4: Simplify right side
   2,536,128.05x = 4,865,444,138,427.39
5. Step 5: Solve for x
   x = 4,865,444,138,427.39/2,536,128.05
6. Step 6: Final answer
   x = 1,918,453.66