Finding the Fourth Proportional to 2,488.30, 3,432.09 and 2,112.69

Step by Step Solution

1. Step 1: Write the proportion equation
   2,488.30 : 3,432.09 = 2,112.69 : x
2. Step 2: Convert to fraction form
   2,488.30/3,432.09 = 2,112.69/x
3. Step 3: Cross multiply
   2,488.30x = 3,432.09 × 2,112.69
4. Step 4: Simplify right side
   2,488.30x = 7,250,942.22
5. Step 5: Solve for x
   x = 7,250,942.22/2,488.30
6. Step 6: Final answer
   x = 2,914.01