Finding the Fourth Proportional to 2,102.29, 2,901.23 and 1,158.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,102.29 : 2,901.23 = 1,158.15 : x
2. Step 2: Convert to fraction form
   2,102.29/2,901.23 = 1,158.15/x
3. Step 3: Cross multiply
   2,102.29x = 2,901.23 × 1,158.15
4. Step 4: Simplify right side
   2,102.29x = 3,360,059.52
5. Step 5: Solve for x
   x = 3,360,059.52/2,102.29
6. Step 6: Final answer
   x = 1,598.29