Finding the Fourth Proportional to 1,008,406.10, 1,412,818.30 and 1,008,406.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,008,406.10 : 1,412,818.30 = 1,008,406.10 : x
2. Step 2: Convert to fraction form
   1,008,406.10/1,412,818.30 = 1,008,406.10/x
3. Step 3: Cross multiply
   1,008,406.10x = 1,412,818.30 × 1,008,406.10
4. Step 4: Simplify right side
   1,008,406.10x = 1,424,694,591,911.63
5. Step 5: Solve for x
   x = 1,424,694,591,911.63/1,008,406.10
6. Step 6: Final answer
   x = 1,412,818.30