Finding the Fourth Proportional to 1,818.55, 2,510.72 and 1,190.22

Step by Step Solution

1. Step 1: Write the proportion equation
   1,818.55 : 2,510.72 = 1,190.22 : x
2. Step 2: Convert to fraction form
   1,818.55/2,510.72 = 1,190.22/x
3. Step 3: Cross multiply
   1,818.55x = 2,510.72 × 1,190.22
4. Step 4: Simplify right side
   1,818.55x = 2,988,309.16
5. Step 5: Solve for x
   x = 2,988,309.16/1,818.55
6. Step 6: Final answer
   x = 1,643.24