Finding the Fourth Proportional to 2,309,157.72, 3,186,629.71 and 1,290,562.47

Step by Step Solution

1. Step 1: Write the proportion equation
   2,309,157.72 : 3,186,629.71 = 1,290,562.47 : x
2. Step 2: Convert to fraction form
   2,309,157.72/3,186,629.71 = 1,290,562.47/x
3. Step 3: Cross multiply
   2,309,157.72x = 3,186,629.71 × 1,290,562.47
4. Step 4: Simplify right side
   2,309,157.72x = 4,112,544,706,286.58
5. Step 5: Solve for x
   x = 4,112,544,706,286.58/2,309,157.72
6. Step 6: Final answer
   x = 1,780,971.77