Finding the Fourth Proportional to 2,808,608.10, 4,212,912.15 and 1,391,432.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,808,608.10 : 4,212,912.15 = 1,391,432.10 : x
2. Step 2: Convert to fraction form
   2,808,608.10/4,212,912.15 = 1,391,432.10/x
3. Step 3: Cross multiply
   2,808,608.10x = 4,212,912.15 × 1,391,432.10
4. Step 4: Simplify right side
   2,808,608.10x = 5,861,981,199,990.02
5. Step 5: Solve for x
   x = 5,861,981,199,990.02/2,808,608.10
6. Step 6: Final answer
   x = 2,087,148.15