Finding the Fourth Proportional to 2,161,139.57, 2,982,069.71 and 1,243,019.69

Step by Step Solution

1. Step 1: Write the proportion equation
   2,161,139.57 : 2,982,069.71 = 1,243,019.69 : x
2. Step 2: Convert to fraction form
   2,161,139.57/2,982,069.71 = 1,243,019.69/x
3. Step 3: Cross multiply
   2,161,139.57x = 2,982,069.71 × 1,243,019.69
4. Step 4: Simplify right side
   2,161,139.57x = 3,706,771,366,482.59
5. Step 5: Solve for x
   x = 3,706,771,366,482.59/2,161,139.57
6. Step 6: Final answer
   x = 1,715,192.96