Finding the Fourth Proportional to 2,189.50, 3,020.65 and 1,348.74

Step by Step Solution

1. Step 1: Write the proportion equation
   2,189.50 : 3,020.65 = 1,348.74 : x
2. Step 2: Convert to fraction form
   2,189.50/3,020.65 = 1,348.74/x
3. Step 3: Cross multiply
   2,189.50x = 3,020.65 × 1,348.74
4. Step 4: Simplify right side
   2,189.50x = 4,074,080.40
5. Step 5: Solve for x
   x = 4,074,080.40/2,189.50
6. Step 6: Final answer
   x = 1,860.74