Finding the Fourth Proportional to 2,017.81, 2,783.06 and 1,353.51

Step by Step Solution

1. Step 1: Write the proportion equation
   2,017.81 : 2,783.06 = 1,353.51 : x
2. Step 2: Convert to fraction form
   2,017.81/2,783.06 = 1,353.51/x
3. Step 3: Cross multiply
   2,017.81x = 2,783.06 × 1,353.51
4. Step 4: Simplify right side
   2,017.81x = 3,766,892.77
5. Step 5: Solve for x
   x = 3,766,892.77/2,017.81
6. Step 6: Final answer
   x = 1,866.82