Finding the Fourth Proportional to 1,377.46, 1,901.55 and 936.07

Step by Step Solution

1. Step 1: Write the proportion equation
   1,377.46 : 1,901.55 = 936.07 : x
2. Step 2: Convert to fraction form
   1,377.46/1,901.55 = 936.07/x
3. Step 3: Cross multiply
   1,377.46x = 1,901.55 × 936.07
4. Step 4: Simplify right side
   1,377.46x = 1,779,983.91
5. Step 5: Solve for x
   x = 1,779,983.91/1,377.46
6. Step 6: Final answer
   x = 1,292.22