Finding the Fourth Proportional to 1,851.48, 2,775.83 and 1,120.91

Step by Step Solution

1. Step 1: Write the proportion equation
   1,851.48 : 2,775.83 = 1,120.91 : x
2. Step 2: Convert to fraction form
   1,851.48/2,775.83 = 1,120.91/x
3. Step 3: Cross multiply
   1,851.48x = 2,775.83 × 1,120.91
4. Step 4: Simplify right side
   1,851.48x = 3,111,436.12
5. Step 5: Solve for x
   x = 3,111,436.12/1,851.48
6. Step 6: Final answer
   x = 1,680.51