Finding the Fourth Proportional to 2,381.74, 3,569.20 and 1,339.55

Step by Step Solution

1. Step 1: Write the proportion equation
   2,381.74 : 3,569.20 = 1,339.55 : x
2. Step 2: Convert to fraction form
   2,381.74/3,569.20 = 1,339.55/x
3. Step 3: Cross multiply
   2,381.74x = 3,569.20 × 1,339.55
4. Step 4: Simplify right side
   2,381.74x = 4,781,121.86
5. Step 5: Solve for x
   x = 4,781,121.86/2,381.74
6. Step 6: Final answer
   x = 2,007.41