Finding the Fourth Proportional to 1,412,672.28, 2,118,960.78 and 613,953.88

Step by Step Solution

1. Step 1: Write the proportion equation
   1,412,672.28 : 2,118,960.78 = 613,953.88 : x
2. Step 2: Convert to fraction form
   1,412,672.28/2,118,960.78 = 613,953.88/x
3. Step 3: Cross multiply
   1,412,672.28x = 2,118,960.78 × 613,953.88
4. Step 4: Simplify right side
   1,412,672.28x = 1,300,944,192,448.83
5. Step 5: Solve for x
   x = 1,300,944,192,448.83/1,412,672.28
6. Step 6: Final answer
   x = 920,910.12