Finding the Fourth Proportional to 2,040.42, 2,815.27 and 1,201.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,040.42 : 2,815.27 = 1,201.15 : x
2. Step 2: Convert to fraction form
   2,040.42/2,815.27 = 1,201.15/x
3. Step 3: Cross multiply
   2,040.42x = 2,815.27 × 1,201.15
4. Step 4: Simplify right side
   2,040.42x = 3,381,561.56
5. Step 5: Solve for x
   x = 3,381,561.56/2,040.42
6. Step 6: Final answer
   x = 1,657.29