Finding the Fourth Proportional to 1,354.91, 1,868.63 and 935.06

Step by Step Solution

1. Step 1: Write the proportion equation
   1,354.91 : 1,868.63 = 935.06 : x
2. Step 2: Convert to fraction form
   1,354.91/1,868.63 = 935.06/x
3. Step 3: Cross multiply
   1,354.91x = 1,868.63 × 935.06
4. Step 4: Simplify right side
   1,354.91x = 1,747,276.35
5. Step 5: Solve for x
   x = 1,747,276.35/1,354.91
6. Step 6: Final answer
   x = 1,289.58