Finding the Fourth Proportional to 1,433.34, 1,978.34 and 935.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,433.34 : 1,978.34 = 935.10 : x
2. Step 2: Convert to fraction form
   1,433.34/1,978.34 = 935.10/x
3. Step 3: Cross multiply
   1,433.34x = 1,978.34 × 935.10
4. Step 4: Simplify right side
   1,433.34x = 1,849,941.06
5. Step 5: Solve for x
   x = 1,849,941.06/1,433.34
6. Step 6: Final answer
   x = 1,290.65