Finding the Fourth Proportional to 2,423.35, 3,631.55 and 1,381.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,423.35 : 3,631.55 = 1,381.20 : x
2. Step 2: Convert to fraction form
   2,423.35/3,631.55 = 1,381.20/x
3. Step 3: Cross multiply
   2,423.35x = 3,631.55 × 1,381.20
4. Step 4: Simplify right side
   2,423.35x = 5,015,904.53
5. Step 5: Solve for x
   x = 5,015,904.53/2,423.35
6. Step 6: Final answer
   x = 2,069.82