Finding the Fourth Proportional to 2,187.84, 3,018.56 and 1,977.34

Step by Step Solution

1. Step 1: Write the proportion equation
   2,187.84 : 3,018.56 = 1,977.34 : x
2. Step 2: Convert to fraction form
   2,187.84/3,018.56 = 1,977.34/x
3. Step 3: Cross multiply
   2,187.84x = 3,018.56 × 1,977.34
4. Step 4: Simplify right side
   2,187.84x = 5,968,713.32
5. Step 5: Solve for x
   x = 5,968,713.32/2,187.84
6. Step 6: Final answer
   x = 2,728.13