Finding the Fourth Proportional to 1,851.61, 2,554.59 and 1,105.06

Step by Step Solution

1. Step 1: Write the proportion equation
   1,851.61 : 2,554.59 = 1,105.06 : x
2. Step 2: Convert to fraction form
   1,851.61/2,554.59 = 1,105.06/x
3. Step 3: Cross multiply
   1,851.61x = 2,554.59 × 1,105.06
4. Step 4: Simplify right side
   1,851.61x = 2,822,975.23
5. Step 5: Solve for x
   x = 2,822,975.23/1,851.61
6. Step 6: Final answer
   x = 1,524.61