Finding the Fourth Proportional to 1,377.10, 1,900.06 and 935.43

Step by Step Solution

1. Step 1: Write the proportion equation
   1,377.10 : 1,900.06 = 935.43 : x
2. Step 2: Convert to fraction form
   1,377.10/1,900.06 = 935.43/x
3. Step 3: Cross multiply
   1,377.10x = 1,900.06 × 935.43
4. Step 4: Simplify right side
   1,377.10x = 1,777,373.13
5. Step 5: Solve for x
   x = 1,777,373.13/1,377.10
6. Step 6: Final answer
   x = 1,290.66