Finding the Fourth Proportional to 2,156.33, 3,235.76 and 906.82

Step by Step Solution

1. Step 1: Write the proportion equation
   2,156.33 : 3,235.76 = 906.82 : x
2. Step 2: Convert to fraction form
   2,156.33/3,235.76 = 906.82/x
3. Step 3: Cross multiply
   2,156.33x = 3,235.76 × 906.82
4. Step 4: Simplify right side
   2,156.33x = 2,934,246.06
5. Step 5: Solve for x
   x = 2,934,246.06/2,156.33
6. Step 6: Final answer
   x = 1,360.76