Finding the Fourth Proportional to 2,019.06, 2,789.46 and 1,988.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,019.06 : 2,789.46 = 1,988.10 : x
2. Step 2: Convert to fraction form
   2,019.06/2,789.46 = 1,988.10/x
3. Step 3: Cross multiply
   2,019.06x = 2,789.46 × 1,988.10
4. Step 4: Simplify right side
   2,019.06x = 5,545,725.43
5. Step 5: Solve for x
   x = 5,545,725.43/2,019.06
6. Step 6: Final answer
   x = 2,746.69