Finding the Fourth Proportional to 3,513.18, 4,848.71 and 2,187.30

Step by Step Solution

1. Step 1: Write the proportion equation
   3,513.18 : 4,848.71 = 2,187.30 : x
2. Step 2: Convert to fraction form
   3,513.18/4,848.71 = 2,187.30/x
3. Step 3: Cross multiply
   3,513.18x = 4,848.71 × 2,187.30
4. Step 4: Simplify right side
   3,513.18x = 10,605,572.45
5. Step 5: Solve for x
   x = 10,605,572.45/3,513.18
6. Step 6: Final answer
   x = 3,018.80