Finding the Fourth Proportional to 2,155.73, 3,234.27 and 906.98

Step by Step Solution

1. Step 1: Write the proportion equation
   2,155.73 : 3,234.27 = 906.98 : x
2. Step 2: Convert to fraction form
   2,155.73/3,234.27 = 906.98/x
3. Step 3: Cross multiply
   2,155.73x = 3,234.27 × 906.98
4. Step 4: Simplify right side
   2,155.73x = 2,933,418.20
5. Step 5: Solve for x
   x = 2,933,418.20/2,155.73
6. Step 6: Final answer
   x = 1,360.75