Finding the Fourth Proportional to 2,071.29, 3,108.45 and 1,292.43

Step by Step Solution

1. Step 1: Write the proportion equation
   2,071.29 : 3,108.45 = 1,292.43 : x
2. Step 2: Convert to fraction form
   2,071.29/3,108.45 = 1,292.43/x
3. Step 3: Cross multiply
   2,071.29x = 3,108.45 × 1,292.43
4. Step 4: Simplify right side
   2,071.29x = 4,017,454.03
5. Step 5: Solve for x
   x = 4,017,454.03/2,071.29
6. Step 6: Final answer
   x = 1,939.59