Finding the Fourth Proportional to 3,686,544, 5,087,430.72 and 1,990,800

Step by Step Solution

1. Step 1: Write the proportion equation
   3,686,544 : 5,087,430.72 = 1,990,800 : x
2. Step 2: Convert to fraction form
   3,686,544/5,087,430.72 = 1,990,800/x
3. Step 3: Cross multiply
   3,686,544x = 5,087,430.72 × 1,990,800
4. Step 4: Simplify right side
   3,686,544x = 10,128,057,077,376
5. Step 5: Solve for x
   x = 10,128,057,077,376/3,686,544
6. Step 6: Final answer
   x = 2,747,304