Finding the Fourth Proportional to 1,376.57, 1,900.59 and 935.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,376.57 : 1,900.59 = 935.12 : x
2. Step 2: Convert to fraction form
   1,376.57/1,900.59 = 935.12/x
3. Step 3: Cross multiply
   1,376.57x = 1,900.59 × 935.12
4. Step 4: Simplify right side
   1,376.57x = 1,777,279.72
5. Step 5: Solve for x
   x = 1,777,279.72/1,376.57
6. Step 6: Final answer
   x = 1,291.09