Finding the Fourth Proportional to 909.40, 1,362.86 and 802.48

Step by Step Solution

1. Step 1: Write the proportion equation
   909.40 : 1,362.86 = 802.48 : x
2. Step 2: Convert to fraction form
   909.40/1,362.86 = 802.48/x
3. Step 3: Cross multiply
   909.40x = 1,362.86 × 802.48
4. Step 4: Simplify right side
   909.40x = 1,093,667.89
5. Step 5: Solve for x
   x = 1,093,667.89/909.40
6. Step 6: Final answer
   x = 1,202.63