Finding the Fourth Proportional to 2,920.91, 4,381.29 and 729.59

Step by Step Solution

1. Step 1: Write the proportion equation
   2,920.91 : 4,381.29 = 729.59 : x
2. Step 2: Convert to fraction form
   2,920.91/4,381.29 = 729.59/x
3. Step 3: Cross multiply
   2,920.91x = 4,381.29 × 729.59
4. Step 4: Simplify right side
   2,920.91x = 3,196,523.46
5. Step 5: Solve for x
   x = 3,196,523.46/2,920.91
6. Step 6: Final answer
   x = 1,094.36