Finding the Fourth Proportional to 1,396.50, 1,928.49 and 900.03

Step by Step Solution

1. Step 1: Write the proportion equation
   1,396.50 : 1,928.49 = 900.03 : x
2. Step 2: Convert to fraction form
   1,396.50/1,928.49 = 900.03/x
3. Step 3: Cross multiply
   1,396.50x = 1,928.49 × 900.03
4. Step 4: Simplify right side
   1,396.50x = 1,735,698.85
5. Step 5: Solve for x
   x = 1,735,698.85/1,396.50
6. Step 6: Final answer
   x = 1,242.89