Finding the Fourth Proportional to 1,377.46, 1,900.56 and 935.20

Step by Step Solution

1. Step 1: Write the proportion equation
   1,377.46 : 1,900.56 = 935.20 : x
2. Step 2: Convert to fraction form
   1,377.46/1,900.56 = 935.20/x
3. Step 3: Cross multiply
   1,377.46x = 1,900.56 × 935.20
4. Step 4: Simplify right side
   1,377.46x = 1,777,403.71
5. Step 5: Solve for x
   x = 1,777,403.71/1,377.46
6. Step 6: Final answer
   x = 1,290.35