Finding the Fourth Proportional to 1,396.53, 1,928.50 and 900.02

Step by Step Solution

1. Step 1: Write the proportion equation
   1,396.53 : 1,928.50 = 900.02 : x
2. Step 2: Convert to fraction form
   1,396.53/1,928.50 = 900.02/x
3. Step 3: Cross multiply
   1,396.53x = 1,928.50 × 900.02
4. Step 4: Simplify right side
   1,396.53x = 1,735,691.14
5. Step 5: Solve for x
   x = 1,735,691.14/1,396.53
6. Step 6: Final answer
   x = 1,242.86