Finding the Fourth Proportional to 2,187.39, 3,018.59 and 1,303.23

Step by Step Solution

1. Step 1: Write the proportion equation
   2,187.39 : 3,018.59 = 1,303.23 : x
2. Step 2: Convert to fraction form
   2,187.39/3,018.59 = 1,303.23/x
3. Step 3: Cross multiply
   2,187.39x = 3,018.59 × 1,303.23
4. Step 4: Simplify right side
   2,187.39x = 3,933,917.05
5. Step 5: Solve for x
   x = 3,933,917.05/2,187.39
6. Step 6: Final answer
   x = 1,798.45