Finding the Fourth Proportional to 2,199.50, 3,034.20 and 1,315.22

Step by Step Solution

1. Step 1: Write the proportion equation
   2,199.50 : 3,034.20 = 1,315.22 : x
2. Step 2: Convert to fraction form
   2,199.50/3,034.20 = 1,315.22/x
3. Step 3: Cross multiply
   2,199.50x = 3,034.20 × 1,315.22
4. Step 4: Simplify right side
   2,199.50x = 3,990,640.52
5. Step 5: Solve for x
   x = 3,990,640.52/2,199.50
6. Step 6: Final answer
   x = 1,814.34