Finding the Fourth Proportional to 2,012.37, 3,020.61 and 1,387.71

Step by Step Solution

1. Step 1: Write the proportion equation
   2,012.37 : 3,020.61 = 1,387.71 : x
2. Step 2: Convert to fraction form
   2,012.37/3,020.61 = 1,387.71/x
3. Step 3: Cross multiply
   2,012.37x = 3,020.61 × 1,387.71
4. Step 4: Simplify right side
   2,012.37x = 4,191,733.76
5. Step 5: Solve for x
   x = 4,191,733.76/2,012.37
6. Step 6: Final answer
   x = 2,082.98