Finding the Fourth Proportional to 2,182.55, 3,012.23 and 1,238.58

Step by Step Solution

1. Step 1: Write the proportion equation
   2,182.55 : 3,012.23 = 1,238.58 : x
2. Step 2: Convert to fraction form
   2,182.55/3,012.23 = 1,238.58/x
3. Step 3: Cross multiply
   2,182.55x = 3,012.23 × 1,238.58
4. Step 4: Simplify right side
   2,182.55x = 3,730,887.83
5. Step 5: Solve for x
   x = 3,730,887.83/2,182.55
6. Step 6: Final answer
   x = 1,709.42