Finding the Fourth Proportional to 2,535,990.50, 3,499,667.70 and 1,390,078.64

Step by Step Solution

1. Step 1: Write the proportion equation
   2,535,990.50 : 3,499,667.70 = 1,390,078.64 : x
2. Step 2: Convert to fraction form
   2,535,990.50/3,499,667.70 = 1,390,078.64/x
3. Step 3: Cross multiply
   2,535,990.50x = 3,499,667.70 × 1,390,078.64
4. Step 4: Simplify right side
   2,535,990.50x = 4,864,813,316,867.93
5. Step 5: Solve for x
   x = 4,864,813,316,867.93/2,535,990.50
6. Step 6: Final answer
   x = 1,918,308.97