Finding the Fourth Proportional to 2,191.34, 3,286.28 and 730.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,191.34 : 3,286.28 = 730.10 : x
2. Step 2: Convert to fraction form
   2,191.34/3,286.28 = 730.10/x
3. Step 3: Cross multiply
   2,191.34x = 3,286.28 × 730.10
4. Step 4: Simplify right side
   2,191.34x = 2,399,313.03
5. Step 5: Solve for x
   x = 2,399,313.03/2,191.34
6. Step 6: Final answer
   x = 1,094.91