Finding the Fourth Proportional to 2,205.18, 3,308.58 and 972.54

Step by Step Solution

1. Step 1: Write the proportion equation
   2,205.18 : 3,308.58 = 972.54 : x
2. Step 2: Convert to fraction form
   2,205.18/3,308.58 = 972.54/x
3. Step 3: Cross multiply
   2,205.18x = 3,308.58 × 972.54
4. Step 4: Simplify right side
   2,205.18x = 3,217,726.39
5. Step 5: Solve for x
   x = 3,217,726.39/2,205.18
6. Step 6: Final answer
   x = 1,459.17