Finding the Fourth Proportional to 1,187.82, 1,788.15 and 1,068.75

Step by Step Solution

1. Step 1: Write the proportion equation
   1,187.82 : 1,788.15 = 1,068.75 : x
2. Step 2: Convert to fraction form
   1,187.82/1,788.15 = 1,068.75/x
3. Step 3: Cross multiply
   1,187.82x = 1,788.15 × 1,068.75
4. Step 4: Simplify right side
   1,187.82x = 1,911,085.31
5. Step 5: Solve for x
   x = 1,911,085.31/1,187.82
6. Step 6: Final answer
   x = 1,608.90