Finding the Fourth Proportional to 2,190.93, 3,285.30 and 729.57

Step by Step Solution

1. Step 1: Write the proportion equation
   2,190.93 : 3,285.30 = 729.57 : x
2. Step 2: Convert to fraction form
   2,190.93/3,285.30 = 729.57/x
3. Step 3: Cross multiply
   2,190.93x = 3,285.30 × 729.57
4. Step 4: Simplify right side
   2,190.93x = 2,396,856.32
5. Step 5: Solve for x
   x = 2,396,856.32/2,190.93
6. Step 6: Final answer
   x = 1,093.99