Finding the Fourth Proportional to 1,356.98, 1,874.39 and 936.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,356.98 : 1,874.39 = 936.59 : x
2. Step 2: Convert to fraction form
   1,356.98/1,874.39 = 936.59/x
3. Step 3: Cross multiply
   1,356.98x = 1,874.39 × 936.59
4. Step 4: Simplify right side
   1,356.98x = 1,755,520.88
5. Step 5: Solve for x
   x = 1,755,520.88/1,356.98
6. Step 6: Final answer
   x = 1,293.70