Finding the Fourth Proportional to 3,703.82, 5,111.72 and 2,131.88

Step by Step Solution

1. Step 1: Write the proportion equation
   3,703.82 : 5,111.72 = 2,131.88 : x
2. Step 2: Convert to fraction form
   3,703.82/5,111.72 = 2,131.88/x
3. Step 3: Cross multiply
   3,703.82x = 5,111.72 × 2,131.88
4. Step 4: Simplify right side
   3,703.82x = 10,897,573.63
5. Step 5: Solve for x
   x = 10,897,573.63/3,703.82
6. Step 6: Final answer
   x = 2,942.25