Finding the Fourth Proportional to 2,148.82, 2,958.50 and 1,872.70

Step by Step Solution

1. Step 1: Write the proportion equation
   2,148.82 : 2,958.50 = 1,872.70 : x
2. Step 2: Convert to fraction form
   2,148.82/2,958.50 = 1,872.70/x
3. Step 3: Cross multiply
   2,148.82x = 2,958.50 × 1,872.70
4. Step 4: Simplify right side
   2,148.82x = 5,540,382.95
5. Step 5: Solve for x
   x = 5,540,382.95/2,148.82
6. Step 6: Final answer
   x = 2,578.34