Finding the Fourth Proportional to 2,102.43, 2,901.33 and 1,158.11

Step by Step Solution

1. Step 1: Write the proportion equation
   2,102.43 : 2,901.33 = 1,158.11 : x
2. Step 2: Convert to fraction form
   2,102.43/2,901.33 = 1,158.11/x
3. Step 3: Cross multiply
   2,102.43x = 2,901.33 × 1,158.11
4. Step 4: Simplify right side
   2,102.43x = 3,360,044.78
5. Step 5: Solve for x
   x = 3,360,044.78/2,102.43
6. Step 6: Final answer
   x = 1,598.17