Finding the Fourth Proportional to 2,111.32, 3,169.77 and 1,187.38

Step by Step Solution

1. Step 1: Write the proportion equation
   2,111.32 : 3,169.77 = 1,187.38 : x
2. Step 2: Convert to fraction form
   2,111.32/3,169.77 = 1,187.38/x
3. Step 3: Cross multiply
   2,111.32x = 3,169.77 × 1,187.38
4. Step 4: Simplify right side
   2,111.32x = 3,763,721.50
5. Step 5: Solve for x
   x = 3,763,721.50/2,111.32
6. Step 6: Final answer
   x = 1,782.64