Finding the Fourth Proportional to 1,401.06, 1,933.57 and 928.14

Step by Step Solution

1. Step 1: Write the proportion equation
   1,401.06 : 1,933.57 = 928.14 : x
2. Step 2: Convert to fraction form
   1,401.06/1,933.57 = 928.14/x
3. Step 3: Cross multiply
   1,401.06x = 1,933.57 × 928.14
4. Step 4: Simplify right side
   1,401.06x = 1,794,625.04
5. Step 5: Solve for x
   x = 1,794,625.04/1,401.06
6. Step 6: Final answer
   x = 1,280.90