Finding the Fourth Proportional to 2,381.34, 3,287.39 and 1,585.99

Step by Step Solution

1. Step 1: Write the proportion equation
   2,381.34 : 3,287.39 = 1,585.99 : x
2. Step 2: Convert to fraction form
   2,381.34/3,287.39 = 1,585.99/x
3. Step 3: Cross multiply
   2,381.34x = 3,287.39 × 1,585.99
4. Step 4: Simplify right side
   2,381.34x = 5,213,757.47
5. Step 5: Solve for x
   x = 5,213,757.47/2,381.34
6. Step 6: Final answer
   x = 2,189.42