Finding the Fourth Proportional to 2,188.58, 3,013.65 and 1,871.46

Step by Step Solution

1. Step 1: Write the proportion equation
   2,188.58 : 3,013.65 = 1,871.46 : x
2. Step 2: Convert to fraction form
   2,188.58/3,013.65 = 1,871.46/x
3. Step 3: Cross multiply
   2,188.58x = 3,013.65 × 1,871.46
4. Step 4: Simplify right side
   2,188.58x = 5,639,925.43
5. Step 5: Solve for x
   x = 5,639,925.43/2,188.58
6. Step 6: Final answer
   x = 2,576.99