Finding the Fourth Proportional to 2,783,686.80, 4,175,469.72 and 890,422.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,783,686.80 : 4,175,469.72 = 890,422.56 : x
2. Step 2: Convert to fraction form
   2,783,686.80/4,175,469.72 = 890,422.56/x
3. Step 3: Cross multiply
   2,783,686.80x = 4,175,469.72 × 890,422.56
4. Step 4: Simplify right side
   2,783,686.80x = 3,717,932,437,284.88
5. Step 5: Solve for x
   x = 3,717,932,437,284.88/2,783,686.80
6. Step 6: Final answer
   x = 1,335,614.49