Finding the Fourth Proportional to 2,102.94, 2,902.06 and 1,158.71

Step by Step Solution

1. Step 1: Write the proportion equation
   2,102.94 : 2,902.06 = 1,158.71 : x
2. Step 2: Convert to fraction form
   2,102.94/2,902.06 = 1,158.71/x
3. Step 3: Cross multiply
   2,102.94x = 2,902.06 × 1,158.71
4. Step 4: Simplify right side
   2,102.94x = 3,362,632.88
5. Step 5: Solve for x
   x = 3,362,632.88/2,102.94
6. Step 6: Final answer
   x = 1,599.02