Finding the Fourth Proportional to 2,290.72, 3,435.89 and 730.66

Step by Step Solution

1. Step 1: Write the proportion equation
   2,290.72 : 3,435.89 = 730.66 : x
2. Step 2: Convert to fraction form
   2,290.72/3,435.89 = 730.66/x
3. Step 3: Cross multiply
   2,290.72x = 3,435.89 × 730.66
4. Step 4: Simplify right side
   2,290.72x = 2,510,463.73
5. Step 5: Solve for x
   x = 2,510,463.73/2,290.72
6. Step 6: Final answer
   x = 1,095.93