Finding the Fourth Proportional to 1,433.31, 1,977.98 and 935.66

Step by Step Solution

1. Step 1: Write the proportion equation
   1,433.31 : 1,977.98 = 935.66 : x
2. Step 2: Convert to fraction form
   1,433.31/1,977.98 = 935.66/x
3. Step 3: Cross multiply
   1,433.31x = 1,977.98 × 935.66
4. Step 4: Simplify right side
   1,433.31x = 1,850,702.20
5. Step 5: Solve for x
   x = 1,850,702.20/1,433.31
6. Step 6: Final answer
   x = 1,291.21