Finding the Fourth Proportional to 2,071.92, 2,859.12 and 1,140.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,071.92 : 2,859.12 = 1,140.42 : x
2. Step 2: Convert to fraction form
   2,071.92/2,859.12 = 1,140.42/x
3. Step 3: Cross multiply
   2,071.92x = 2,859.12 × 1,140.42
4. Step 4: Simplify right side
   2,071.92x = 3,260,597.63
5. Step 5: Solve for x
   x = 3,260,597.63/2,071.92
6. Step 6: Final answer
   x = 1,573.71