Finding the Fourth Proportional to 2,185,642.12, 3,278,469.34 and 765,366.05

Step by Step Solution

1. Step 1: Write the proportion equation
   2,185,642.12 : 3,278,469.34 = 765,366.05 : x
2. Step 2: Convert to fraction form
   2,185,642.12/3,278,469.34 = 765,366.05/x
3. Step 3: Cross multiply
   2,185,642.12x = 3,278,469.34 × 765,366.05
4. Step 4: Simplify right side
   2,185,642.12x = 2,509,229,128,801.91
5. Step 5: Solve for x
   x = 2,509,229,128,801.91/2,185,642.12
6. Step 6: Final answer
   x = 1,148,051.23