Finding the Fourth Proportional to 1,401, 1,934.46 and 1,107.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,401 : 1,934.46 = 1,107.78 : x
2. Step 2: Convert to fraction form
   1,401/1,934.46 = 1,107.78/x
3. Step 3: Cross multiply
   1,401x = 1,934.46 × 1,107.78
4. Step 4: Simplify right side
   1,401x = 2,142,956.10
5. Step 5: Solve for x
   x = 2,142,956.10/1,401
6. Step 6: Final answer
   x = 1,529.59