Finding the Fourth Proportional to 2,187,725.47, 3,019,061.69 and 1,207,665.07

Step by Step Solution

1. Step 1: Write the proportion equation
   2,187,725.47 : 3,019,061.69 = 1,207,665.07 : x
2. Step 2: Convert to fraction form
   2,187,725.47/3,019,061.69 = 1,207,665.07/x
3. Step 3: Cross multiply
   2,187,725.47x = 3,019,061.69 × 1,207,665.07
4. Step 4: Simplify right side
   2,187,725.47x = 3,646,015,332,092.86
5. Step 5: Solve for x
   x = 3,646,015,332,092.86/2,187,725.47
6. Step 6: Final answer
   x = 1,666,578.09