Finding the Fourth Proportional to 2,021.64, 2,789.98 and 1,348.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,021.64 : 2,789.98 = 1,348.28 : x
2. Step 2: Convert to fraction form
   2,021.64/2,789.98 = 1,348.28/x
3. Step 3: Cross multiply
   2,021.64x = 2,789.98 × 1,348.28
4. Step 4: Simplify right side
   2,021.64x = 3,761,674.23
5. Step 5: Solve for x
   x = 3,761,674.23/2,021.64
6. Step 6: Final answer
   x = 1,860.70