Finding the Fourth Proportional to 2,091.06, 2,885.73 and 1,383.51

Step by Step Solution

1. Step 1: Write the proportion equation
   2,091.06 : 2,885.73 = 1,383.51 : x
2. Step 2: Convert to fraction form
   2,091.06/2,885.73 = 1,383.51/x
3. Step 3: Cross multiply
   2,091.06x = 2,885.73 × 1,383.51
4. Step 4: Simplify right side
   2,091.06x = 3,992,436.31
5. Step 5: Solve for x
   x = 3,992,436.31/2,091.06
6. Step 6: Final answer
   x = 1,909.29