Finding the Fourth Proportional to 2,085.27, 3,131.48 and 1,851.53

Step by Step Solution

1. Step 1: Write the proportion equation
   2,085.27 : 3,131.48 = 1,851.53 : x
2. Step 2: Convert to fraction form
   2,085.27/3,131.48 = 1,851.53/x
3. Step 3: Cross multiply
   2,085.27x = 3,131.48 × 1,851.53
4. Step 4: Simplify right side
   2,085.27x = 5,798,015.99
5. Step 5: Solve for x
   x = 5,798,015.99/2,085.27
6. Step 6: Final answer
   x = 2,780.47