Finding the Fourth Proportional to 2,111.77, 2,912.70 and 1,831.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,111.77 : 2,912.70 = 1,831.52 : x
2. Step 2: Convert to fraction form
   2,111.77/2,912.70 = 1,831.52/x
3. Step 3: Cross multiply
   2,111.77x = 2,912.70 × 1,831.52
4. Step 4: Simplify right side
   2,111.77x = 5,334,668.30
5. Step 5: Solve for x
   x = 5,334,668.30/2,111.77
6. Step 6: Final answer
   x = 2,526.16