Finding the Fourth Proportional to 2,214.90, 3,315.15 and 1,725.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,214.90 : 3,315.15 = 1,725.30 : x
2. Step 2: Convert to fraction form
   2,214.90/3,315.15 = 1,725.30/x
3. Step 3: Cross multiply
   2,214.90x = 3,315.15 × 1,725.30
4. Step 4: Simplify right side
   2,214.90x = 5,719,628.30
5. Step 5: Solve for x
   x = 5,719,628.30/2,214.90
6. Step 6: Final answer
   x = 2,582.34