Finding the Fourth Proportional to 2,026.62, 2,796.78 and 1,187.58

Step by Step Solution

1. Step 1: Write the proportion equation
   2,026.62 : 2,796.78 = 1,187.58 : x
2. Step 2: Convert to fraction form
   2,026.62/2,796.78 = 1,187.58/x
3. Step 3: Cross multiply
   2,026.62x = 2,796.78 × 1,187.58
4. Step 4: Simplify right side
   2,026.62x = 3,321,399.99
5. Step 5: Solve for x
   x = 3,321,399.99/2,026.62
6. Step 6: Final answer
   x = 1,638.89