Finding the Fourth Proportional to 2,089.61, 2,883.65 and 1,158.11

Step by Step Solution

1. Step 1: Write the proportion equation
   2,089.61 : 2,883.65 = 1,158.11 : x
2. Step 2: Convert to fraction form
   2,089.61/2,883.65 = 1,158.11/x
3. Step 3: Cross multiply
   2,089.61x = 2,883.65 × 1,158.11
4. Step 4: Simplify right side
   2,089.61x = 3,339,563.69
5. Step 5: Solve for x
   x = 3,339,563.69/2,089.61
6. Step 6: Final answer
   x = 1,598.18