Finding the Fourth Proportional to 2,290,889.56, 3,161,434.98 and 1,272,294.32

Step by Step Solution

1. Step 1: Write the proportion equation
   2,290,889.56 : 3,161,434.98 = 1,272,294.32 : x
2. Step 2: Convert to fraction form
   2,290,889.56/3,161,434.98 = 1,272,294.32/x
3. Step 3: Cross multiply
   2,290,889.56x = 3,161,434.98 × 1,272,294.32
4. Step 4: Simplify right side
   2,290,889.56x = 4,022,275,768,103.31
5. Step 5: Solve for x
   x = 4,022,275,768,103.31/2,290,889.56
6. Step 6: Final answer
   x = 1,755,770.26