Finding the Fourth Proportional to 2,209.15, 3,313.72 and 749.33

Step by Step Solution

1. Step 1: Write the proportion equation
   2,209.15 : 3,313.72 = 749.33 : x
2. Step 2: Convert to fraction form
   2,209.15/3,313.72 = 749.33/x
3. Step 3: Cross multiply
   2,209.15x = 3,313.72 × 749.33
4. Step 4: Simplify right side
   2,209.15x = 2,483,069.81
5. Step 5: Solve for x
   x = 2,483,069.81/2,209.15
6. Step 6: Final answer
   x = 1,123.99