Finding the Fourth Proportional to 2,187.16, 3,018.78 and 1,488.76

Step by Step Solution

1. Step 1: Write the proportion equation
   2,187.16 : 3,018.78 = 1,488.76 : x
2. Step 2: Convert to fraction form
   2,187.16/3,018.78 = 1,488.76/x
3. Step 3: Cross multiply
   2,187.16x = 3,018.78 × 1,488.76
4. Step 4: Simplify right side
   2,187.16x = 4,494,238.91
5. Step 5: Solve for x
   x = 4,494,238.91/2,187.16
6. Step 6: Final answer
   x = 2,054.83