Finding the Fourth Proportional to 2,215.06, 3,321.57 and 753.82

Step by Step Solution

1. Step 1: Write the proportion equation
   2,215.06 : 3,321.57 = 753.82 : x
2. Step 2: Convert to fraction form
   2,215.06/3,321.57 = 753.82/x
3. Step 3: Cross multiply
   2,215.06x = 3,321.57 × 753.82
4. Step 4: Simplify right side
   2,215.06x = 2,503,860.42
5. Step 5: Solve for x
   x = 2,503,860.42/2,215.06
6. Step 6: Final answer
   x = 1,130.38