Finding the Fourth Proportional to 2,182.99, 3,012.01 and 1,238.57

Step by Step Solution

1. Step 1: Write the proportion equation
   2,182.99 : 3,012.01 = 1,238.57 : x
2. Step 2: Convert to fraction form
   2,182.99/3,012.01 = 1,238.57/x
3. Step 3: Cross multiply
   2,182.99x = 3,012.01 × 1,238.57
4. Step 4: Simplify right side
   2,182.99x = 3,730,585.23
5. Step 5: Solve for x
   x = 3,730,585.23/2,182.99
6. Step 6: Final answer
   x = 1,708.93