Finding the Fourth Proportional to 2,185.48, 3,279.89 and 800.13

Step by Step Solution

1. Step 1: Write the proportion equation
   2,185.48 : 3,279.89 = 800.13 : x
2. Step 2: Convert to fraction form
   2,185.48/3,279.89 = 800.13/x
3. Step 3: Cross multiply
   2,185.48x = 3,279.89 × 800.13
4. Step 4: Simplify right side
   2,185.48x = 2,624,334.24
5. Step 5: Solve for x
   x = 2,624,334.24/2,185.48
6. Step 6: Final answer
   x = 1,200.80