Finding the Fourth Proportional to 2,191.25, 3,023.42 and 1,306.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,191.25 : 3,023.42 = 1,306.88 : x
2. Step 2: Convert to fraction form
   2,191.25/3,023.42 = 1,306.88/x
3. Step 3: Cross multiply
   2,191.25x = 3,023.42 × 1,306.88
4. Step 4: Simplify right side
   2,191.25x = 3,951,235.28
5. Step 5: Solve for x
   x = 3,951,235.28/2,191.25
6. Step 6: Final answer
   x = 1,803.19