Finding the Fourth Proportional to 2,707.30, 4,063.35 and 1,391.98

Step by Step Solution

1. Step 1: Write the proportion equation
   2,707.30 : 4,063.35 = 1,391.98 : x
2. Step 2: Convert to fraction form
   2,707.30/4,063.35 = 1,391.98/x
3. Step 3: Cross multiply
   2,707.30x = 4,063.35 × 1,391.98
4. Step 4: Simplify right side
   2,707.30x = 5,656,101.93
5. Step 5: Solve for x
   x = 5,656,101.93/2,707.30
6. Step 6: Final answer
   x = 2,089.20