Finding the Fourth Proportional to 2,188.80, 3,019.54 and 1,304.08

Step by Step Solution

1. Step 1: Write the proportion equation
   2,188.80 : 3,019.54 = 1,304.08 : x
2. Step 2: Convert to fraction form
   2,188.80/3,019.54 = 1,304.08/x
3. Step 3: Cross multiply
   2,188.80x = 3,019.54 × 1,304.08
4. Step 4: Simplify right side
   2,188.80x = 3,937,721.72
5. Step 5: Solve for x
   x = 3,937,721.72/2,188.80
6. Step 6: Final answer
   x = 1,799.03