Finding the Fourth Proportional to 2,187.09, 3,020.33 and 1,870.53

Step by Step Solution

1. Step 1: Write the proportion equation
   2,187.09 : 3,020.33 = 1,870.53 : x
2. Step 2: Convert to fraction form
   2,187.09/3,020.33 = 1,870.53/x
3. Step 3: Cross multiply
   2,187.09x = 3,020.33 × 1,870.53
4. Step 4: Simplify right side
   2,187.09x = 5,649,608.52
5. Step 5: Solve for x
   x = 5,649,608.52/2,187.09
6. Step 6: Final answer
   x = 2,583.16