Finding the Fourth Proportional to 2,085.64, 3,132.04 and 1,851.91

Step by Step Solution

1. Step 1: Write the proportion equation
   2,085.64 : 3,132.04 = 1,851.91 : x
2. Step 2: Convert to fraction form
   2,085.64/3,132.04 = 1,851.91/x
3. Step 3: Cross multiply
   2,085.64x = 3,132.04 × 1,851.91
4. Step 4: Simplify right side
   2,085.64x = 5,800,243.74
5. Step 5: Solve for x
   x = 5,800,243.74/2,085.64
6. Step 6: Final answer
   x = 2,781.04