Finding the Fourth Proportional to 2,090.66, 3,117.71 and 1,831.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,090.66 : 3,117.71 = 1,831.86 : x
2. Step 2: Convert to fraction form
   2,090.66/3,117.71 = 1,831.86/x
3. Step 3: Cross multiply
   2,090.66x = 3,117.71 × 1,831.86
4. Step 4: Simplify right side
   2,090.66x = 5,711,212.82
5. Step 5: Solve for x
   x = 5,711,212.82/2,090.66
6. Step 6: Final answer
   x = 2,731.78