Finding the Fourth Proportional to 2,290.22, 3,435.58 and 729.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,290.22 : 3,435.58 = 729.86 : x
2. Step 2: Convert to fraction form
   2,290.22/3,435.58 = 729.86/x
3. Step 3: Cross multiply
   2,290.22x = 3,435.58 × 729.86
4. Step 4: Simplify right side
   2,290.22x = 2,507,471.59
5. Step 5: Solve for x
   x = 2,507,471.59/2,290.22
6. Step 6: Final answer
   x = 1,094.86