Finding the Fourth Proportional to 2,017.61, 3,025.70 and 1,115.81

Step by Step Solution

1. Step 1: Write the proportion equation
   2,017.61 : 3,025.70 = 1,115.81 : x
2. Step 2: Convert to fraction form
   2,017.61/3,025.70 = 1,115.81/x
3. Step 3: Cross multiply
   2,017.61x = 3,025.70 × 1,115.81
4. Step 4: Simplify right side
   2,017.61x = 3,376,094.47
5. Step 5: Solve for x
   x = 3,376,094.47/2,017.61
6. Step 6: Final answer
   x = 1,673.31