Finding the Fourth Proportional to 1,433.39, 1,977.50 and 902.08

Step by Step Solution

1. Step 1: Write the proportion equation
   1,433.39 : 1,977.50 = 902.08 : x
2. Step 2: Convert to fraction form
   1,433.39/1,977.50 = 902.08/x
3. Step 3: Cross multiply
   1,433.39x = 1,977.50 × 902.08
4. Step 4: Simplify right side
   1,433.39x = 1,783,858.69
5. Step 5: Solve for x
   x = 1,783,858.69/1,433.39
6. Step 6: Final answer
   x = 1,244.50