Finding the Fourth Proportional to 2,871.52, 3,959.69 and 2,126.93

Step by Step Solution

1. Step 1: Write the proportion equation
   2,871.52 : 3,959.69 = 2,126.93 : x
2. Step 2: Convert to fraction form
   2,871.52/3,959.69 = 2,126.93/x
3. Step 3: Cross multiply
   2,871.52x = 3,959.69 × 2,126.93
4. Step 4: Simplify right side
   2,871.52x = 8,421,953.02
5. Step 5: Solve for x
   x = 8,421,953.02/2,871.52
6. Step 6: Final answer
   x = 2,932.93