Finding the Fourth Proportional to 2,920.33, 4,381.18 and 945.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,920.33 : 4,381.18 = 945.88 : x
2. Step 2: Convert to fraction form
   2,920.33/4,381.18 = 945.88/x
3. Step 3: Cross multiply
   2,920.33x = 4,381.18 × 945.88
4. Step 4: Simplify right side
   2,920.33x = 4,144,055.89
5. Step 5: Solve for x
   x = 4,144,055.89/2,920.33
6. Step 6: Final answer
   x = 1,419.04