Finding the Fourth Proportional to 2,205.57, 3,308.76 and 907.95

Step by Step Solution

1. Step 1: Write the proportion equation
   2,205.57 : 3,308.76 = 907.95 : x
2. Step 2: Convert to fraction form
   2,205.57/3,308.76 = 907.95/x
3. Step 3: Cross multiply
   2,205.57x = 3,308.76 × 907.95
4. Step 4: Simplify right side
   2,205.57x = 3,004,188.64
5. Step 5: Solve for x
   x = 3,004,188.64/2,205.57
6. Step 6: Final answer
   x = 1,362.09