Finding the Fourth Proportional to 1,851.89, 2,555.64 and 1,105.70

Step by Step Solution

1. Step 1: Write the proportion equation
   1,851.89 : 2,555.64 = 1,105.70 : x
2. Step 2: Convert to fraction form
   1,851.89/2,555.64 = 1,105.70/x
3. Step 3: Cross multiply
   1,851.89x = 2,555.64 × 1,105.70
4. Step 4: Simplify right side
   1,851.89x = 2,825,771.15
5. Step 5: Solve for x
   x = 2,825,771.15/1,851.89
6. Step 6: Final answer
   x = 1,525.88