Finding the Fourth Proportional to 1,377.38, 2,067.18 and 1,068.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,377.38 : 2,067.18 = 1,068.50 : x
2. Step 2: Convert to fraction form
   1,377.38/2,067.18 = 1,068.50/x
3. Step 3: Cross multiply
   1,377.38x = 2,067.18 × 1,068.50
4. Step 4: Simplify right side
   1,377.38x = 2,208,781.83
5. Step 5: Solve for x
   x = 2,208,781.83/1,377.38
6. Step 6: Final answer
   x = 1,603.61