Finding the Fourth Proportional to 2,191.58, 3,286.15 and 729.93

Step by Step Solution

1. Step 1: Write the proportion equation
   2,191.58 : 3,286.15 = 729.93 : x
2. Step 2: Convert to fraction form
   2,191.58/3,286.15 = 729.93/x
3. Step 3: Cross multiply
   2,191.58x = 3,286.15 × 729.93
4. Step 4: Simplify right side
   2,191.58x = 2,398,659.47
5. Step 5: Solve for x
   x = 2,398,659.47/2,191.58
6. Step 6: Final answer
   x = 1,094.49