Finding the Fourth Proportional to 3,703.86, 5,111.64 and 2,131.92

Step by Step Solution

1. Step 1: Write the proportion equation
   3,703.86 : 5,111.64 = 2,131.92 : x
2. Step 2: Convert to fraction form
   3,703.86/5,111.64 = 2,131.92/x
3. Step 3: Cross multiply
   3,703.86x = 5,111.64 × 2,131.92
4. Step 4: Simplify right side
   3,703.86x = 10,897,607.55
5. Step 5: Solve for x
   x = 10,897,607.55/3,703.86
6. Step 6: Final answer
   x = 2,942.23