Finding the Fourth Proportional to 1,624.17, 2,241.78 and 961.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,624.17 : 2,241.78 = 961.59 : x
2. Step 2: Convert to fraction form
   1,624.17/2,241.78 = 961.59/x
3. Step 3: Cross multiply
   1,624.17x = 2,241.78 × 961.59
4. Step 4: Simplify right side
   1,624.17x = 2,155,673.23
5. Step 5: Solve for x
   x = 2,155,673.23/1,624.17
6. Step 6: Final answer
   x = 1,327.25