Finding the Fourth Proportional to 2,102.42, 2,901.34 and 1,158.18

Step by Step Solution

1. Step 1: Write the proportion equation
   2,102.42 : 2,901.34 = 1,158.18 : x
2. Step 2: Convert to fraction form
   2,102.42/2,901.34 = 1,158.18/x
3. Step 3: Cross multiply
   2,102.42x = 2,901.34 × 1,158.18
4. Step 4: Simplify right side
   2,102.42x = 3,360,273.96
5. Step 5: Solve for x
   x = 3,360,273.96/2,102.42
6. Step 6: Final answer
   x = 1,598.29