Finding the Fourth Proportional to 1,401.64, 1,935.56 and 905.44

Step by Step Solution

1. Step 1: Write the proportion equation
   1,401.64 : 1,935.56 = 905.44 : x
2. Step 2: Convert to fraction form
   1,401.64/1,935.56 = 905.44/x
3. Step 3: Cross multiply
   1,401.64x = 1,935.56 × 905.44
4. Step 4: Simplify right side
   1,401.64x = 1,752,533.45
5. Step 5: Solve for x
   x = 1,752,533.45/1,401.64
6. Step 6: Final answer
   x = 1,250.34