Finding the Fourth Proportional to 2,188.02, 3,019.80 and 1,304.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,188.02 : 3,019.80 = 1,304.10 : x
2. Step 2: Convert to fraction form
   2,188.02/3,019.80 = 1,304.10/x
3. Step 3: Cross multiply
   2,188.02x = 3,019.80 × 1,304.10
4. Step 4: Simplify right side
   2,188.02x = 3,938,121.18
5. Step 5: Solve for x
   x = 3,938,121.18/2,188.02
6. Step 6: Final answer
   x = 1,799.86