Finding the Fourth Proportional to 2,300.53, 3,448.35 and 1,311.21

Step by Step Solution

1. Step 1: Write the proportion equation
   2,300.53 : 3,448.35 = 1,311.21 : x
2. Step 2: Convert to fraction form
   2,300.53/3,448.35 = 1,311.21/x
3. Step 3: Cross multiply
   2,300.53x = 3,448.35 × 1,311.21
4. Step 4: Simplify right side
   2,300.53x = 4,521,517.01
5. Step 5: Solve for x
   x = 4,521,517.01/2,300.53
6. Step 6: Final answer
   x = 1,965.43