Finding the Fourth Proportional to 2,215.99, 3,320.33 and 1,756.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,215.99 : 3,320.33 = 1,756.72 : x
2. Step 2: Convert to fraction form
   2,215.99/3,320.33 = 1,756.72/x
3. Step 3: Cross multiply
   2,215.99x = 3,320.33 × 1,756.72
4. Step 4: Simplify right side
   2,215.99x = 5,832,886.21
5. Step 5: Solve for x
   x = 5,832,886.21/2,215.99
6. Step 6: Final answer
   x = 2,632.18