Finding the Fourth Proportional to 2,810.39, 4,215.83 and 730.38

Step by Step Solution

1. Step 1: Write the proportion equation
   2,810.39 : 4,215.83 = 730.38 : x
2. Step 2: Convert to fraction form
   2,810.39/4,215.83 = 730.38/x
3. Step 3: Cross multiply
   2,810.39x = 4,215.83 × 730.38
4. Step 4: Simplify right side
   2,810.39x = 3,079,154.26
5. Step 5: Solve for x
   x = 3,079,154.26/2,810.39
6. Step 6: Final answer
   x = 1,095.63